Medium technical severity with public exploit material referenced by a structured source; prioritise exposed affected systems while verifying vendor guidance.
Patch available
Distribution package intelligence
Ubuntu vendor package status
Canonical’s release and source-package findings are shown separately from local repository availability.
1 package state
Repository candidate not checked
A published vendor fix does not prove that a matching update is enabled and installable on a particular asset. Confirm the local package candidate before scheduling remediation.
Ubuntu release
Source package
Vendor state
Fixed version
Evidence
Ubuntu 24.04 LTSnoble · standard archive
curl
Vendor fix publishedCanonical reports that a fixed source package version has been published. Repository candidate availability is not checked by BlackTree.
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-2026-7168 · CSAF 2.0 · revision 3 · finalRed Hat Product Securitycurl: libcurl: Information disclosure via incorrect Proxy-Authorization header reuse
26 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
curl as a component of Red Hat Enterprise Linux 6
curl.src as a component of Red Hat Enterprise Linux 6
libcurl as a component of Red Hat Enterprise Linux 6
libcurl-devel as a component of Red Hat Enterprise Linux 6
curl as a component of Red Hat Enterprise Linux 7
curl.src as a component of Red Hat Enterprise Linux 7
libcurl as a component of Red Hat Enterprise Linux 7
Summary
A flaw was found in libcurl. When a user performs a transfer over an HTTP proxy using Digest authentication and then reuses the same handle for a second transfer with a different proxy host, libcurl incorrectly sends the `Proxy-Authorization` header intended for the first proxy to the second proxy. This could lead to the disclosure of sensitive authentication information to an unintended proxy, potentially allowing an attacker to gain unauthorized access or impersonate the user.
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-2026-29932
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 7 days
Medium 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
Successfully using libcurl to do a transfer over a specific HTTP proxy
(`proxyA`) with **Digest** authentication and then changing the proxy host to
a second one (`proxyB`) for a second transfer, reusing the same handle, makes
libcurl wrongly pass on the `Proxy-Authorization:` header field meant for
`proxyA`, to `proxyB`.
What
Successfully using libcurl to do a transfer over a specific HTTP proxy
(`proxyA`) with **Digest** authentication and then changing the proxy host to
a second one (`proxyB`) for a second transfer, reusing the same handle, makes
libcurl wrongly pass on the `Proxy-Authorization:` header field meant for
`proxyA`, to `proxyB`.
Why
A capture-replay flaw exists when the design of the product makes it possible for a malicious user to sniff network traffic and bypass authentication by replaying it to the server in question to the same effect as the original message (or with minor changes).
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
Successfully using libcurl to do a transfer over a specific HTTP proxy
(`proxyA`) with **Digest** authentication and then changing the proxy host to
a second one (`proxyB`) for a second transfer, reusing the same handle, makes
libcurl wrongly pass on the `Proxy-Authorization:` header field meant for
`proxyA`, to `proxyB`.
Why
A capture-replay flaw exists when the design of the product makes it possible for a malicious user to sniff network traffic and bypass authentication by replaying it to the server in question to the same effect as the original message (or with minor changes).
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 → Authentication Bypass by Capture-replay → 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-294: Authentication Bypass by Capture-replay. A capture-replay flaw exists when the design of the product makes it possible for a malicious user to sniff network traffic and bypass authentication by replaying it to the server in question to the same effect as the original message (or with minor changes).
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:L/I:N/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.CLowConfidentiality impact: A successful attack can cause a limited loss.INoneIntegrity impact: No direct loss is represented by this metric.ANoneAvailability impact: 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.
Only matched European and national findings are included. Language selectors and unavailable sources are omitted.
ENISA EUVD · EUVD-2026-29932Official EUVD mapping
0 linked advisory records.
Official EUVD record ↗BSI · German · WID-SEC-2026-2929Splunk Splunk Enterprise: Mehrere Schwachstellen
Ein Angreifer kann mehrere Schwachstellen in Splunk Splunk Enterprise ausnutzen, um beliebigen Code auszuführen, Berechtigungen zu erweitern, Sicherheitsmaßnahmen zu umgehen, SQL-Injection-, serverseitige Request-Forgery- und Cross-Site-Scripting-Angriffe durchzuführen, sensible Informationen offenzulegen oder zu manipulieren, Denial-of-Service-Zustände auszulösen oder andere, nicht näher spezifizierte Angriffe durchzuführen.
Official advisory ↗BSI · German · WID-SEC-2026-1307cURL: Mehrere Schwachstellen
Ein Angreifer kann mehrere Schwachstellen in cURL ausnutzen, um Sicherheitsvorkehrungen zu umgehen, vertrauliche Informationen offenzulegen oder Daten zu manipulieren.
Official advisory ↗CERT-FR · French · CERTFR-2026-AVI-1125Multiples vulnérabilités dans les produits VMware
Official advisory ↗CERT-FR · French · CERTFR-2026-AVI-0796Multiples vulnérabilités dans Tenable Identity Exposure
e.org/CVERecord?id=CVE-2026-45491
Référence CVE CVE-2026-45591
https://www.cve.org/CVERecord?id=CVE-2026-45591
Référence CVE CVE-2026-4873
https://www.cve.org/CVERecord?id=CVE-2026-4873
Référence CVE CVE-2026-5545
https://www.cve.org/CVERecord?id=CVE-2026-5545
Référence CVE CVE-2026-5773
https://www.cve.org/CVERecord?id=CVE-2026-5773
Référence CVE CVE-2026-6253
https://www.cve.org/CVERecord?id=CVE-2026-6253
Référence CVE CVE-2026-6276
https://www.cve.org/CVERecord?id=CVE-2026-6276
Référence CVE CVE-2026-6429
https://www.cve.org/CVERecord?id=CVE-2026-6429
Référence CVE CVE-2026-7009
https://www.cve.org/CVERecord?id=CVE-2026-7009
Référence CVE CVE-2026-7168
https://www.cve.org/CVERecord?id=CVE-2026-7168
Référence CVE CVE-2026-7383
https://www.cve.org/CVERecord?id=CVE-2026-7383
Référence CVE CVE-2026-9076
https://www.cve.org/CVERecord?id=CVE-2026-9076
Gestion détaillée du document
le 24 juin 2026
Version initiale
Alertes
Avis
Bulletins d’actualités
Mentions légales
Conditions générales
À propos
Contact
cyber.gouv.fr
service-public.fr
legifrance.gouv.fr
info.gouv.fr
france.fr
info.gouv.fr/risques
Premier Ministre / Secrétariat Général de la Défense et de la Sécurité Nationale / Agence nationale de la
sécurité des systèmes d'information
Official advisory ↗CERT-FR · French · CERTFR-2026-AVI-0514Multiples vulnérabilités dans Curl
De multiples vulnérabilités ont été découvertes dans Curl. Elles permettent à un attaquant de provoquer une atteinte à la confidentialité des données et un contournement de la politique de sécurité.
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.
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 13 May 2026 · Last source change 23 Jun 2026, 16:12 UTC · CWE-294 · Authentication Bypass by Capture-replay
CVE recordCVE.org · 5.2
CVSS sourceNIST NVD
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-2026-29932
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; curl as a component of Red Hat Enterprise Linux 6; curl.src as a component of Red Hat Enterprise Linux 6; libcurl as a component of Red Hat Enterprise Linux 6; libcurl-devel as a component of Red Hat Enterprise Linux 6; curl as a component of Red Hat Enterprise Linux 7; curl.src as a component of Red Hat Enterprise Linux 7; libcurl as a component of Red Hat Enterprise Linux 7; libcurl-devel as a component of Red Hat Enterprise Linux 7; curl as a component of Red Hat Enterprise Linux 8; curl.src as a component of Red Hat Enterprise Linux 8; libcurl as a component of Red Hat Enterprise Linux 8; libcurl-devel as a component of Red Hat Enterprise Linux 8; libcurl-minimal as a component of Red Hat Enterprise Linux 8; curl as a component of Red Hat Enterprise Linux 9; curl-minimal as a component of Red Hat Enterprise Linux 9; curl.src as a component of Red Hat Enterprise Linux 9; libcurl as a component of Red Hat Enterprise Linux 9; libcurl-devel as a component of Red Hat Enterprise Linux 9; libcurl-minimal as a component of Red Hat Enterprise Linux 9; openshift/ose-rhel-coreos-9 as a component of Red Hat OpenShift Container Platform 4 · 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; Red Hat JBoss Core Services 2.4.62.SP5
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; curl as a component of Red Hat Enterprise Linux 6; curl.src as a component of Red Hat Enterprise Linux 6; libcurl as a component of Red Hat Enterprise Linux 6; libcurl-devel as a component of Red Hat Enterprise Linux 6; curl as a component of Red Hat Enterprise Linux 7; curl.src as a component of Red Hat Enterprise Linux 7; libcurl as a component of Red Hat Enterprise Linux 7; libcurl-devel as a component of Red Hat Enterprise Linux 7; curl as a component of Red Hat Enterprise Linux 8; curl.src as a component of Red Hat Enterprise Linux 8; libcurl as a component of Red Hat Enterprise Linux 8; libcurl-devel as a component of Red Hat Enterprise Linux 8; libcurl-minimal as a component of Red Hat Enterprise Linux 8; curl as a component of Red Hat Enterprise Linux 9; curl-minimal as a component of Red Hat Enterprise Linux 9; curl.src as a component of Red Hat Enterprise Linux 9; libcurl as a component of Red Hat Enterprise Linux 9; libcurl-devel as a component of Red Hat Enterprise Linux 9; libcurl-minimal as a component of Red Hat Enterprise Linux 9; 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 · 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; Red Hat JBoss Core Services 2.4.62.SP5
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; curl as a component of Red Hat Enterprise Linux 6; curl.src as a component of Red Hat Enterprise Linux 6; libcurl as a component of Red Hat Enterprise Linux 6; libcurl-devel as a component of Red Hat Enterprise Linux 6; curl as a component of Red Hat Enterprise Linux 7; curl.src as a component of Red Hat Enterprise Linux 7; libcurl as a component of Red Hat Enterprise Linux 7; libcurl-devel as a component of Red Hat Enterprise Linux 7; curl as a component of Red Hat Enterprise Linux 8; curl.src as a component of Red Hat Enterprise Linux 8; libcurl as a component of Red Hat Enterprise Linux 8; libcurl-devel as a component of Red Hat Enterprise Linux 8; libcurl-minimal as a component of Red Hat Enterprise Linux 8; curl as a component of Red Hat Enterprise Linux 9; curl-minimal as a component of Red Hat Enterprise Linux 9; curl.src as a component of Red Hat Enterprise Linux 9; libcurl as a component of Red Hat Enterprise Linux 9; libcurl-devel as a component of Red Hat Enterprise Linux 9; libcurl-minimal as a component of Red Hat Enterprise Linux 9; openshift/ose-rhel-coreos-9 as a component of Red Hat OpenShift Container Platform 4 · 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
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; curl as a component of Red Hat Enterprise Linux 6; curl.src as a component of Red Hat Enterprise Linux 6; libcurl as a component of Red Hat Enterprise Linux 6; libcurl-devel as a component of Red Hat Enterprise Linux 6; curl as a component of Red Hat Enterprise Linux 7; curl.src as a component of Red Hat Enterprise Linux 7; libcurl as a component of Red Hat Enterprise Linux 7; libcurl-devel as a component of Red Hat Enterprise Linux 7; curl as a component of Red Hat Enterprise Linux 8; curl.src as a component of Red Hat Enterprise Linux 8; libcurl as a component of Red Hat Enterprise Linux 8; libcurl-devel as a component of Red Hat Enterprise Linux 8; libcurl-minimal as a component of Red Hat Enterprise Linux 8; curl as a component of Red Hat Enterprise Linux 9; curl-minimal as a component of Red Hat Enterprise Linux 9; curl.src as a component of Red Hat Enterprise Linux 9; libcurl as a component of Red Hat Enterprise Linux 9; libcurl-devel as a component of Red Hat Enterprise Linux 9; libcurl-minimal as a component of Red Hat Enterprise Linux 9; openshift/ose-rhel-coreos-9 as a component of Red Hat OpenShift Container Platform 4 · 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; Red Hat JBoss Core Services 2.4.62.SP5
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-2026-7168: cross-proxy Digest auth state leak | BlackTree
