Critical technical impact with a remotely reachable, unauthenticated path and a public exploit reference; no CISA KEV confirmation is currently recorded.
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-2026-8926 · CSAF 2.0 · revision 3 · finalRed Hat Product Securitycurl: curl: Information disclosure via incorrect .netrc password lookup
9 known affected
The vendor explicitly identifies these products as affected by this CVE.
curl as a component of Red Hat Enterprise Linux 10
curl.src as a component of Red Hat Enterprise Linux 10
libcurl as a component of Red Hat Enterprise Linux 10
libcurl-devel as a component of Red Hat Enterprise Linux 10
libcurl-minimal as a component of Red Hat Enterprise Linux 10
openshift/ose-rhel-coreos-8 as a component of Red Hat OpenShift Container Platform 4
openshift/ose-rhel-coreos-9 as a component of Red Hat OpenShift Container Platform 4
devspaces/code-rhel9 as a component of Red Hat OpenShift Dev Spaces
rhtpa/rhtpa-trustification-service-rhel9 as a component of Red Hat Trusted Profile Analyzer
Summary
A flaw was found in curl. When curl is configured to use a .netrc file for credentials and a URL is provided with a username but no password, curl may incorrectly retrieve and use the password for a different user from the .netrc file for the same host. This could lead to unauthorized information disclosure, as curl might connect using unintended credentials.
Remediation
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://images.redhat.com/
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-2026-41507
No EUVD known-exploited evidence
ENISA has published the identifier mapping but no EUVD description has been stored yet.
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
Not supplied in the stored EUVD record
Advisory evidence
No linked advisory details stored yet
Recommended actionWithin 72 hours
Critical technical impact with a remotely reachable, unauthenticated path and a public exploit reference; no CISA KEV confirmation is currently recorded.
Patch available
01
What, why and how
When asking curl to use a `.netrc` file to find credentials and at the same
time specifying a URL with a username(without a password), like
`https://user@example.com/`, curl could wrongly get and use the password for
*another* user set in the `.netrc` file for that host if such a one exists and
there is no match for the specified user.
What
When asking curl to use a `.netrc` file to find credentials and at the same
time specifying a URL with a username(without a password), like
`https://user@example.com/`, curl could wrongly get and use the password for
*another* user set in the `.netrc` file for that host if such a one exists and
there is no match for the specified user.
Why
The product transmits or stores authentication credentials, but it uses an insecure method that is susceptible to unauthorized interception and/or retrieval.
How
An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.
What
When asking curl to use a `.netrc` file to find credentials and at the same
time specifying a URL with a username(without a password), like
`https://user@example.com/`, curl could wrongly get and use the password for
*another* user set in the `.netrc` file for that host if such a one exists and
there is no match for the specified user.
Why
The product transmits or stores authentication credentials, but it uses an insecure method that is susceptible to unauthorized interception and/or retrieval.
How
An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.
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
A structured CVE source labels at least one public reference as exploit material. BlackTree has not independently validated that it is safe, reliable or weaponised.
Likely attack path
a network path → Insufficiently Protected Credentials → cause the confidentiality, integrity or availability impact described by the vendor
Attack surface
Network
Privileges required
None: unauthenticated exploitation is possible
User interaction
None
Attack complexity
Low: no specialised conditions are recorded
Security boundary
Unchanged: impact remains within the vulnerable component's security authority
Weakness ?CWE means Common Weakness Enumeration: a standard category for the underlying weakness.
CWE-522: Insufficiently Protected Credentials. The product transmits or stores authentication credentials, but it uses an insecure method that is susceptible to unauthorized interception and/or retrieval.
CVSS vector ?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Common Vulnerability Scoring System 3.1: 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.PRNonePrivileges required: The attacker does not need an account or existing privileges.UINoneUser interaction: No action by another user is required.SUnchangedScope: The security impact remains within the vulnerable component's authority.CHighConfidentiality impact: A successful attack can cause a major loss.IHighIntegrity impact: A successful attack can cause a major loss.ANoneAvailability impact: No direct loss is represented by this metric.
Post-exploitation / living off the land
Stolen credentials, tokens and legitimate administration functions may provide continued access without deploying a large custom toolset.
Only matched European and national findings are included. Language selectors and unavailable sources are omitted.
ENISA EUVD · EUVD-2026-41507Official EUVD mapping
0 linked advisory records.
Official EUVD recordBSI · German · WID-SEC-W-2026-2065cURL: Mehrere Schwachstellen
Ein Angreifer kann mehrere Schwachstellen in cURL ausnutzen, um Sicherheitsvorkehrungen zu umgehen, vertrauliche Informationen offenzulegen, Daten zu manipulieren oder einen Denial-of-Service-Zustand zu verursachen.
Official advisoryCERT-FR · French · CERTFR-2026-AVI-0873Multiples vulnérabilités dans Microsoft Azure Linux
n de sécurité Microsoft Azure Linux CVE-2026-58014 du 01 juillet 2026
Bulletin de sécurité Microsoft Azure Linux CVE-2026-58015 du 01 juillet 2026
Bulletin de sécurité Microsoft Azure Linux CVE-2026-58016 du 01 juillet 2026
Bulletin de sécurité Microsoft Azure Linux CVE-2026-57585 du 03 juillet 2026
Bulletin de sécurité Microsoft Azure Linux CVE-2026-10536 du 04 juillet 2026
Bulletin de sécurité Microsoft Azure Linux CVE-2026-12064 du 04 juillet 2026
Bulletin de sécurité Microsoft Azure Linux CVE-2026-8286 du 04 juillet 2026
Bulletin de sécurité Microsoft Azure Linux CVE-2026-8458 du 04 juillet 2026
Bulletin de sécurité Microsoft Azure Linux CVE-2026-8926 du 04 juillet 2026
Bulletin de sécurité Microsoft Azure Linux CVE-2026-8927 du 04 juillet 2026
Bulletin de sécurité Microsoft Azure Linux CVE-2026-8932 du 04 juillet 2026
Bulletin de sécurité Microsoft Azure Linux CVE-2026-9079 du 04 juillet 2026
Bulletin de sécurité Microsoft Azure Linux CVE-2026-12480 du 07 juillet 2026
Bulletin de sécurité Microsoft Azure Linux CVE-2026-54886 du 07 juillet 2026
Bulletin de sécurité Microsoft Azure Linux CVE-2026-54908 du 09 juillet 2026
Bulletin de sécurité Microsoft Azure Linux CVE-2026-56000 du 09 juillet 2026
Bulletin de sécurité Microsoft Azure Linux CVE-2026-56001 du 09 juillet 2026
Bulletin de sécur
Official advisoryCERT-FR · French · CERTFR-2026-AVI-0797Multiples vulnérabilités dans cURL et libcurl
n 2026
Date de la dernière version 24 juin 2026
Source(s)
Bulletin de sécurité Curl CVE-2026-10536 du 24 juin 2026
Bulletin de sécurité Curl CVE-2026-11352 du 24 juin 2026
Bulletin de sécurité Curl CVE-2026-11564 du 24 juin 2026
Bulletin de sécurité Curl CVE-2026-11586 du 24 juin 2026
Bulletin de sécurité Curl CVE-2026-11856 du 24 juin 2026
Bulletin de sécurité Curl CVE-2026-12064 du 24 juin 2026
Bulletin de sécurité Curl CVE-2026-8286 du 24 juin 2026
Bulletin de sécurité Curl CVE-2026-8458 du 24 juin 2026
Bulletin de sécurité Curl CVE-2026-8924 du 24 juin 2026
Bulletin de sécurité Curl CVE-2026-8925 du 24 juin 2026
Bulletin de sécurité Curl CVE-2026-8926 du 24 juin 2026
Bulletin de sécurité Curl CVE-2026-8927 du 24 juin 2026
Bulletin de sécurité Curl CVE-2026-8932 du 24 juin 2026
Bulletin de sécurité Curl CVE-2026-9079 du 24 juin 2026
Bulletin de sécurité Curl CVE-2026-9080 du 24 juin 2026
Bulletin de sécurité Curl CVE-2026-9545 du 24 juin 2026
Bulletin de sécurité Curl CVE-2026-9546 du 24 juin 2026
Bulletin de sécurité Curl CVE-2026-9547 du 24 juin 2026
Une gestion de version détaillée se trouve à la fin de ce document.
Risques
Atteinte à la confidentialité des données
Contournement de la politique de sécurité
Déni de service à distance
Systèmes affectés
cURL et libcurl versions antérieures
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
curl as a component of Red Hat Enterprise Linux 10; curl.src as a component of Red Hat Enterprise Linux 10; libcurl as a component of Red Hat Enterprise Linux 10; libcurl-devel as a component of Red Hat Enterprise Linux 10; libcurl-minimal as a component of Red Hat Enterprise Linux 10; openshift/ose-rhel-coreos-8 as a component of Red Hat OpenShift Container Platform 4; openshift/ose-rhel-coreos-9 as a component of Red Hat OpenShift Container Platform 4; devspaces/code-rhel9 as a component of Red Hat OpenShift Dev Spaces; rhtpa/rhtpa-trustification-service-rhel9 as a component of Red Hat Trusted Profile Analyzer
Fixed
curl-main@aarch64 as a component of Red Hat Hardened Images; curl-main@src as a component of Red Hat Hardened Images; curl-main@x86_64 as a component of Red Hat Hardened Images; rust-main@aarch64 as a component of Red Hat Hardened Images; rust-main@noarch as a component of Red Hat Hardened Images; rust-main@src as a component of Red Hat Hardened Images; rust-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://images.redhat.com/
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 Jul 2026 · Last source change 6 Jul 2026, 17:02 UTC · CWE-522 · Insufficiently Protected Credentials
CVE recordCVE.org · 5.2
CVSS sourceCISA ADP
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-2026-41507
Product sourceVendor CSAF · Red Hat Product Security
Remediation sourceVendor CSAF · Red Hat Product Security
CWE sourceCNA
NVD statusNVD enriched
Core structured fields are present and their contributing authorities are shown above.
Affected versionsThe structured affected or fixed version information changed.
Before
curl as a component of Red Hat Enterprise Linux 10; curl.src as a component of Red Hat Enterprise Linux 10; libcurl as a component of Red Hat Enterprise Linux 10; libcurl-devel as a component of Red Hat Enterprise Linux 10; libcurl-minimal as a component of Red Hat Enterprise Linux 10; openshift/ose-rhel-coreos-9 as a component of Red Hat OpenShift Container Platform 4; devspaces/code-rhel9 as a component of Red Hat OpenShift Dev Spaces; rhtpa/rhtpa-trustification-service-rhel9 as a component of Red Hat Trusted Profile Analyzer · Fixed: curl-main@aarch64 as a component of Red Hat Hardened Images; curl-main@src as a component of Red Hat Hardened Images; curl-main@x86_64 as a component of Red Hat Hardened Images; rust-main@aarch64 as a component of Red Hat Hardened Images; rust-main@noarch as a component of Red Hat Hardened Images; rust-main@src as a component of Red Hat Hardened Images; rust-main@x86_64 as a component of Red Hat Hardened Images
After
curl as a component of Red Hat Enterprise Linux 10; curl.src as a component of Red Hat Enterprise Linux 10; libcurl as a component of Red Hat Enterprise Linux 10; libcurl-devel as a component of Red Hat Enterprise Linux 10; libcurl-minimal as a component of Red Hat Enterprise Linux 10; openshift/ose-rhel-coreos-8 as a component of Red Hat OpenShift Container Platform 4; openshift/ose-rhel-coreos-9 as a component of Red Hat OpenShift Container Platform 4; devspaces/code-rhel9 as a component of Red Hat OpenShift Dev Spaces; rhtpa/rhtpa-trustification-service-rhel9 as a component of Red Hat Trusted Profile Analyzer · Fixed: curl-main@aarch64 as a component of Red Hat Hardened Images; curl-main@src as a component of Red Hat Hardened Images; curl-main@x86_64 as a component of Red Hat Hardened Images; rust-main@aarch64 as a component of Red Hat Hardened Images; rust-main@noarch as a component of Red Hat Hardened Images; rust-main@src as a component of Red Hat Hardened Images; rust-main@x86_64 as a component of Red Hat Hardened Images
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-2026-8926: password leak with netrc and user in URL | BlackTree
