python-cryptography: Duplicate self-signed intermediates can cause exponential path-building
pyca · cryptography
8.7HighCVSS 4.0
Recommended action
Within 7 days
High technical severity with public exploit material referenced by a structured source; prioritise exposed affected systems while verifying vendor guidance.
Patch available
Direct vendor intelligence
Authoritative vendor CSAF and VEX advisories
Structured product status and remediation from the issuing vendor. Product-state explanations are always visible; large lists can be searched or downloaded.
1 current
CVE-2026-69249 · CSAF 2.0 · revision 3 · finalRed Hat Product Securitypython-cryptography: python-cryptography: Duplicate self-signed intermediates can cause exponential path-building
3 known affected
The vendor explicitly identifies these products as affected by this CVE.
python3-cryptography as a component of Red Hat Enterprise Linux 10
rhel10/keylime-registrar as a component of Red Hat Enterprise Linux 10
rhel10/keylime-verifier as a component of Red Hat Enterprise Linux 10
Summary
A flaw was found in python-cryptography. When processing invalid certificate chains that include duplicate self-signed certificates, the system recursively invokes the same certificate, leading to an exponential increase in processing time. A remote attacker could exploit this by providing a specially crafted certificate chain, causing resource exhaustion and a denial of service (DoS) condition, making the system unavailable. The integrity of the system's validation is not affected, only its availability.
Remediation
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
Optional official sources
National CERT insights ?CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.
Select the national-authority views to include. The exact source language is shown on each matched advisory. Your choice is remembered on this device and encoded in the shareable URL.
Official European source
ENISA European Vulnerability Database
Official EUVD identifiers, advisory evidence and known-exploited context. Missing fields are not treated as evidence of low risk.
1 current
ENISA EUVD identifier
EUVD-2026-52450
No EUVD known-exploited evidence
python-cryptography is a package designed to expose cryptographic primitives and recipes to Python developers. In versions 42.0.0 through 48.0.0, when resolving invalid certificate chains that include duplicate copies of self-signed certificates, the processing recursively invokes the same candidate, leading to an exponential blowup. Although the limitation that the chain depth cannot exceed a specified maximum depth prevents unbounded recursion and guarantees termination, an attacker-controlled certificate chain can lead the processing to easily take more than 5s to reject in testing. This amplification could form the basis for a resource exhaustion denial of service attack. The core issue arises in the recursive nature of build_chain_inner, which does not de-duplicate against previously analyzed candidates. As the correctness of validation is not affected, the integrity of a system cannot be compromised through this vector, only its availability. This issue is fixed in 49.0.0.
EUVD state
Present in the current official mapping
Known exploitation
Not present in the current ENISA EUVD known-exploited dataset. This is not proof of no exploitation.
ENISA score
8.7 · CVSS 4.0
Advisory evidence
No linked advisory details stored yet
Recommended actionWithin 7 days
High technical severity with public exploit material referenced by a structured source; prioritise exposed affected systems while verifying vendor guidance.
Patch available
01
What, why and how
python-cryptography is a package designed to expose cryptographic primitives and recipes to Python developers. In versions 42.0.0 through 48.0.0, when resolving invalid certificate chains that include duplicate copies of self-signed certificates, the processing recursively invokes the same candidate, leading to an exponential blowup. Although the limitation that the chain depth cannot exceed a specified maximum depth prevents unbounded recursion and guarantees termination, an attacker-controlled certificate chain can lead the processing to easily take more than 5s to reject in testing. This amplification could form the basis for a resource exhaustion denial of service attack. The core issue arises in the recursive nature of build_chain_inner, which does not de-duplicate against previously analyzed candidates. As the correctness of validation is not affected, the integrity of a system cannot be compromised through this vector, only its availability. This issue is fixed in 49.0.0.
What
python-cryptography is a package designed to expose cryptographic primitives and recipes to Python developers. In versions 42.0.0 through 48.0.0, when resolving invalid certificate chains that include duplicate copies of self-signed certificates, the processing recursively invokes the same candidate, leading to an exponential blowup. Although the limitation that the chain depth cannot exceed a specified maximum depth prevents unbounded recursion and guarantees termination, an attacker-controlled certificate chain can lead the processing to easily take more than 5s to reject in testing. This amplification could form the basis for a resource exhaustion denial of service attack. The core issue arises in the recursive nature of build_chain_inner, which does not de-duplicate against previously analyzed candidates. As the correctness of validation is not affected, the integrity of a system cannot be compromised through this vector, only its availability. This issue is fixed in 49.0.0.
Why
The product does not properly control the allocation and maintenance of a limited resource.
How
An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may disrupt the affected service.
What
python-cryptography is a package designed to expose cryptographic primitives and recipes to Python developers. In versions 42.0.0 through 48.0.0, when resolving invalid certificate chains that include duplicate copies of self-signed certificates, the processing recursively invokes the same candidate, leading to an exponential blowup. Although the limitation that the chain depth cannot exceed a specified maximum depth prevents unbounded recursion and guarantees termination, an attacker-controlled certificate chain can lead the processing to easily take more than 5s to reject in testing. This amplification could form the basis for a resource exhaustion denial of service attack. The core issue arises in the recursive nature of build_chain_inner, which does not de-duplicate against previously analyzed candidates. As the correctness of validation is not affected, the integrity of a system cannot be compromised through this vector, only its availability. This issue is fixed in 49.0.0.
Why
The product does not properly control the allocation and maintenance of a limited resource.
How
An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may disrupt the affected service.
02
Exploit reality and attack path
CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.
Observed exploitation ?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.No confirmed evidence
No CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.
Public PoC / exploit material ?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.Reference recorded
CISA Vulnrichment records proof-of-concept exploitation in its SSVC data. BlackTree has not independently executed or validated exploit material.
Likely attack path
a network path → Uncontrolled Resource Consumption → disrupt the affected service
Attack surface
Network
Privileges required
None: unauthenticated exploitation is possible
User interaction
None
Attack complexity
Low: no specialised conditions are recorded
Security boundary
Not a CVSS 4.0 base metric
Weakness ?CWE means Common Weakness Enumeration: a standard category for the underlying weakness.
Common Vulnerability Scoring System 4.0: the compact vector below is decoded into plain language.
AVNetworkAttack vector: The vulnerable component can be reached over a network.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.ATNoneAttack requirements: No additional deployment or execution condition is required.PRNonePrivileges required: The attacker does not need an account or existing privileges.UINoneUser interaction: No action by another user is required.VCNoneVulnerable-system confidentiality: No direct loss is represented by this metric.VINoneVulnerable-system integrity: No direct loss is represented by this metric.VAHighVulnerable-system availability: A successful attack can cause a major loss.SCNoneSubsequent-system confidentiality: No direct loss is represented by this metric.SINoneSubsequent-system integrity: No direct loss is represented by this metric.SANoneSubsequent-system availability: No direct loss is represented by this metric.
Post-exploitation / living off the land
No specific living-off-the-land technique is confirmed in the structured sources. Monitor normal administration tools for activity inconsistent with the affected service's baseline.
NetworkUnauthenticatedDenial of serviceCWE-400Public exploit reference
A
Official authority intelligence
Only matched European and national findings are included. Language selectors and unavailable sources are omitted.
ENISA EUVD · EUVD-2026-52450Official EUVD mapping
python-cryptography is a package designed to expose cryptographic primitives and recipes to Python developers. In versions 42.0.0 through 48.0.0, when resolving invalid certificate chains that include duplicate copies of self-signed certificates, the processing recursively invokes the same candidate, leading to an exponential blowup. Although the limitation that the chain depth cannot exceed a specified maximum depth prevents unbounded recursion and guarantees termination, an attacker-controlled certificate chain can lead the processing to easily take more than 5s to reject in testing. This amplification could form the basis for a resource exhaustion denial of service attack. The core issue arises in the recursive nature of build_chain_inner, which does not de-duplicate against previously analyzed candidates. As the correctness of validation is not affected, the integrity of a system cannot be compromised through this vector, only its availability. This issue is fixed in 49.0.0.
Official EUVD recordBSI · German · WID-SEC-W-2026-3214Red Hat Enterprise Linux (python-cryptography): Mehrere Schwachstellen
Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Red Hat Enterprise Linux ausnutzen, um Sicherheitsvorkehrungen zu umgehen oder um einen Denial-of-Service-Zustand herbeizuführen.
Official advisoryCERT-FR · French · CERTFR-2026-AVI-1094Multiples vulnérabilités dans les produits IBM
Operational remediation based on structured source evidence.
Status ?Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change.
Patch available
Affected
python3-cryptography as a component of Red Hat Enterprise Linux 10; rhel10/keylime-registrar as a component of Red Hat Enterprise Linux 10; rhel10/keylime-verifier as a component of Red Hat Enterprise Linux 10
Fixed
python3.14-cryptography-0:45.0.4-4.el10_2.5.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); python3.14-cryptography-0:45.0.4-4.el10_2.5.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); python3.14-cryptography-0:45.0.4-4.el10_2.5.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); python3.14-cryptography-0:45.0.4-4.el10_2.5.src as a component of Red Hat Enterprise Linux AppStream (v. 10); python3.14-cryptography-0:45.0.4-4.el10_2.5.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); python3.14-cryptography-debuginfo-0:45.0.4-4.el10_2.5.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); python3.14-cryptography-debuginfo-0:45.0.4-4.el10_2.5.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); python3.14-cryptography-debuginfo-0:45.0.4-4.el10_2.5.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); python3.14-cryptography-debuginfo-0:45.0.4-4.el10_2.5.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); python3.14-cryptography-debugsource-0:45.0.4-4.el10_2.5.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); python3.14-cryptography-debugsource-0:45.0.4-4.el10_2.5.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); python3.14-cryptography-debugsource-0:45.0.4-4.el10_2.5.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); python3.14-cryptography-debugsource-0:45.0.4-4.el10_2.5.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); python3.14-cryptography-0:45.0.4-4.el9_8.6.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9); python3.14-cryptography-0:45.0.4-4.el9_8.6.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9); python3.14-cryptography-0:45.0.4-4.el9_8.6.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9); python3.14-cryptography-0:45.0.4-4.el9_8.6.src as a component of Red Hat Enterprise Linux AppStream (v. 9); python3.14-cryptography-0:45.0.4-4.el9_8.6.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9); python3.14-cryptography-debuginfo-0:45.0.4-4.el9_8.6.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9); python3.14-cryptography-debuginfo-0:45.0.4-4.el9_8.6.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9); python3.14-cryptography-debuginfo-0:45.0.4-4.el9_8.6.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9); python3.14-cryptography-debuginfo-0:45.0.4-4.el9_8.6.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9); python3.14-cryptography-debugsource-0:45.0.4-4.el9_8.6.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9); python3.14-cryptography-debugsource-0:45.0.4-4.el9_8.6.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9); python3.14-cryptography-debugsource-0:45.0.4-4.el9_8.6.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9); python3.14-cryptography-debugsource-0:45.0.4-4.el9_8.6.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9); python-cryptography-main@aarch64 as a component of Red Hat Hardened Images; python-cryptography-main@src as a component of Red Hat Hardened Images; python-cryptography-main@x86_64 as a component of Red Hat Hardened Images
Action
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
Workaround
No verified workaround is recorded. If business-safe, reduce exposure to the affected interface and allow only trusted sources until authoritative guidance is available.
04
Evidence and provenance
Published 3 Aug 2026 · Last source change 4 Sept 2026, 21:20 UTC · CWE-400 · Uncontrolled Resource Consumption
CVE recordCVE.org · 5.2
CVSS sourceCNA
EPSS source ?The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.FIRST · tracked since 2026-08-14
European sourceENISA EUVD · EUVD-2026-52450
Product sourceVendor CSAF · Red Hat Product Security
Remediation sourceVendor CSAF · Red Hat Product Security
CWE sourceCNA
NVD statusNVD received
Core structured fields are present and their contributing authorities are shown above.
Affected versionsThe structured affected or fixed version information changed.
Before
python3-cryptography as a component of Red Hat Enterprise Linux 10; rhel10/keylime-registrar as a component of Red Hat Enterprise Linux 10; rhel10/keylime-verifier as a component of Red Hat Enterprise Linux 10; python-cryptography.src as a component of Red Hat Hardened Images · Fixed: python3.14-cryptography-0:45.0.4-4.el10_2.5.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); python3.14-cryptography-0:45.0.4-4.el10_2.5.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); python3.14-cryptography-0:45.0.4-4.el10_2.5.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); python3.14-cryptography-0:45.0.4-4.el10_2.5.src as a component of Red Hat Enterprise Linux AppStream (v. 10); python3.14-cryptography-0:45.0.4-4.el10_2.5.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); python3.14-cryptography-debuginfo-0:45.0.4-4.el10_2.5.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); python3.14-cryptography-debuginfo-0:45.0.4-4.el10_2.5.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); python3.14-cryptography-debuginfo-0:45.0.4-4.el10_2.5.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); python3.14-cryptography-debuginfo-0:45.0.4-4.el10_2.5.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); python3.14-cryptography-debugsource-0:45.0.4-4.el10_2.5.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); python3.14-cryptography-debugsource-0:45.0.4-4.el10_2.5.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); python3.14-cryptography-debugsource-0:45.0.4-4.el10_2.5.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); python3.14-cryptography-debugsource-0:45.0.4-4.el10_2.5.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); python3.14-cryptography-0:45.0.4-4.el9_8.6.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9); python3.14-cryptography-0:45.0.4-4.el9_8.6.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9); python3.14-cryptography-0:45.0.4-4.el9_8.6.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9); python3.14-cryptography-0:45.0.4-4.el9_8.6.src as a component of Red Hat Enterprise Linux AppStream (v. 9); python3.14-cryptography-0:45.0.4-4.el9_8.6.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9); python3.14-cryptography-debuginfo-0:45.0.4-4.el9_8.6.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9); python3.14-cryptography-debuginfo-0:45.0.4-4.el9_8.6.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9); python3.14-cryptography-debuginfo-0:45.0.4-4.el9_8.6.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9); python3.14-cryptography-debuginfo-0:45.0.4-4.el9_8.6.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9); python3.14-cryptography-debugsource-0:45.0.4-4.el9_8.6.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9); python3.14-cryptography-debugsource-0:45.0.4-4.el9_8.6.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9); python3.14-cryptography-debugsource-0:45.0.4-4.el9_8.6.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9); python3.14-cryptography-debugsource-0:45.0.4-4.el9_8.6.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
After
python3-cryptography as a component of Red Hat Enterprise Linux 10; rhel10/keylime-registrar as a component of Red Hat Enterprise Linux 10; rhel10/keylime-verifier as a component of Red Hat Enterprise Linux 10 · Fixed: python3.14-cryptography-0:45.0.4-4.el10_2.5.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); python3.14-cryptography-0:45.0.4-4.el10_2.5.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); python3.14-cryptography-0:45.0.4-4.el10_2.5.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); python3.14-cryptography-0:45.0.4-4.el10_2.5.src as a component of Red Hat Enterprise Linux AppStream (v. 10); python3.14-cryptography-0:45.0.4-4.el10_2.5.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); python3.14-cryptography-debuginfo-0:45.0.4-4.el10_2.5.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); python3.14-cryptography-debuginfo-0:45.0.4-4.el10_2.5.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); python3.14-cryptography-debuginfo-0:45.0.4-4.el10_2.5.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); python3.14-cryptography-debuginfo-0:45.0.4-4.el10_2.5.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); python3.14-cryptography-debugsource-0:45.0.4-4.el10_2.5.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); python3.14-cryptography-debugsource-0:45.0.4-4.el10_2.5.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); python3.14-cryptography-debugsource-0:45.0.4-4.el10_2.5.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); python3.14-cryptography-debugsource-0:45.0.4-4.el10_2.5.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); python3.14-cryptography-0:45.0.4-4.el9_8.6.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9); python3.14-cryptography-0:45.0.4-4.el9_8.6.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9); python3.14-cryptography-0:45.0.4-4.el9_8.6.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9); python3.14-cryptography-0:45.0.4-4.el9_8.6.src as a component of Red Hat Enterprise Linux AppStream (v. 9); python3.14-cryptography-0:45.0.4-4.el9_8.6.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9); python3.14-cryptography-debuginfo-0:45.0.4-4.el9_8.6.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9); python3.14-cryptography-debuginfo-0:45.0.4-4.el9_8.6.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9); python3.14-cryptography-debuginfo-0:45.0.4-4.el9_8.6.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9); python3.14-cryptography-debuginfo-0:45.0.4-4.el9_8.6.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9); python3.14-cryptography-debugsource-0:45.0.4-4.el9_8.6.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9); python3.14-cryptography-debugsource-0:45.0.4-4.el9_8.6.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9); python3.14-cryptography-debugsource-0:45.0.4-4.el9_8.6.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9); python3.14-cryptography-debugsource-0:45.0.4-4.el9_8.6.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9); python-cryptography-main@aarch64 as a component of Red Hat Hardened Images; python-cryptography-main@src as a component of Red Hat Hardened Images; python-cryptography-main@x86_64 as a component of Red Hat Hardened Images
Affected versionsThe structured affected or fixed version information changed.
Before
python3-cryptography as a component of Red Hat Enterprise Linux 10; python3.14-cryptography.src as a component of Red Hat Enterprise Linux 10; rhel10/keylime-registrar as a component of Red Hat Enterprise Linux 10; rhel10/keylime-verifier as a component of Red Hat Enterprise Linux 10; python3.14-cryptography.src as a component of Red Hat Enterprise Linux 9
After
python3-cryptography as a component of Red Hat Enterprise Linux 10; rhel10/keylime-registrar as a component of Red Hat Enterprise Linux 10; rhel10/keylime-verifier as a component of Red Hat Enterprise Linux 10; python-cryptography.src as a component of Red Hat Hardened Images · Fixed: python3.14-cryptography-0:45.0.4-4.el10_2.5.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); python3.14-cryptography-0:45.0.4-4.el10_2.5.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); python3.14-cryptography-0:45.0.4-4.el10_2.5.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); python3.14-cryptography-0:45.0.4-4.el10_2.5.src as a component of Red Hat Enterprise Linux AppStream (v. 10); python3.14-cryptography-0:45.0.4-4.el10_2.5.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); python3.14-cryptography-debuginfo-0:45.0.4-4.el10_2.5.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); python3.14-cryptography-debuginfo-0:45.0.4-4.el10_2.5.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); python3.14-cryptography-debuginfo-0:45.0.4-4.el10_2.5.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); python3.14-cryptography-debuginfo-0:45.0.4-4.el10_2.5.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); python3.14-cryptography-debugsource-0:45.0.4-4.el10_2.5.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); python3.14-cryptography-debugsource-0:45.0.4-4.el10_2.5.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); python3.14-cryptography-debugsource-0:45.0.4-4.el10_2.5.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); python3.14-cryptography-debugsource-0:45.0.4-4.el10_2.5.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); python3.14-cryptography-0:45.0.4-4.el9_8.6.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9); python3.14-cryptography-0:45.0.4-4.el9_8.6.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9); python3.14-cryptography-0:45.0.4-4.el9_8.6.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9); python3.14-cryptography-0:45.0.4-4.el9_8.6.src as a component of Red Hat Enterprise Linux AppStream (v. 9); python3.14-cryptography-0:45.0.4-4.el9_8.6.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9); python3.14-cryptography-debuginfo-0:45.0.4-4.el9_8.6.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9); python3.14-cryptography-debuginfo-0:45.0.4-4.el9_8.6.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9); python3.14-cryptography-debuginfo-0:45.0.4-4.el9_8.6.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9); python3.14-cryptography-debuginfo-0:45.0.4-4.el9_8.6.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9); python3.14-cryptography-debugsource-0:45.0.4-4.el9_8.6.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9); python3.14-cryptography-debugsource-0:45.0.4-4.el9_8.6.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9); python3.14-cryptography-debugsource-0:45.0.4-4.el9_8.6.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9); python3.14-cryptography-debugsource-0:45.0.4-4.el9_8.6.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
Affected versionsThe structured affected or fixed version information changed.
Before
python3-cryptography as a component of Red Hat Enterprise Linux 10; python3.14-cryptography.src as a component of Red Hat Enterprise Linux 10; rhel10/keylime-registrar as a component of Red Hat Enterprise Linux 10; rhel10/keylime-verifier as a component of Red Hat Enterprise Linux 10
After
python3-cryptography as a component of Red Hat Enterprise Linux 10; python3.14-cryptography.src as a component of Red Hat Enterprise Linux 10; rhel10/keylime-registrar as a component of Red Hat Enterprise Linux 10; rhel10/keylime-verifier as a component of Red Hat Enterprise Linux 10; python3.14-cryptography.src as a component of Red Hat Enterprise Linux 9
Technical terms and abbreviations used in this report
CVE
Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
CVSS
Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
EPSS
Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
CWE
Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
CNA
CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
CISA ADP
Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
NVD
National Vulnerability Database: NIST's enrichment service for CVE records.
CERT / CSIRT
A computer security incident response team that publishes warnings or coordinates incident response.
PoC
Proof of concept: public material that demonstrates or helps reproduce exploitation.
CSAF
Common Security Advisory Framework: a machine-readable format for security advisories.
LoTL
Living off the land: abuse of legitimate tools or system functions during an attack.
CVE-2026-69249: python-cryptography: Duplicate self-signed intermediates can cause exponential path-building | BlackTree
