GHSA-gv8r-9rw9-9697
Traefik affected by TLS ClientAuth Bypass on HTTP/3
GHSA-gv8r-9rw9-9697 is a high vulnerability (CVSS 7.8) in github.com/traefik/traefik, published February 20, 2026. No source lists public exploit code. Fixed in github.com/traefik/traefik/v2 2.11.37.
- Severity
- 7.8 HighCVSS 4.0, GitHub Advisories
- Exploit chance
- UnscoredNo EPSS score yet
- Exploitation
- None knownNot on CISA’s or ENISA’s lists
- Fixed in
2.11.37github.com/traefik/traefik/v2 +5 more
Description
Summary
There is a potential vulnerability in Traefik managing HTTP/3 connections.
More details in the CVE-2025-68121.
Patches
- https://github.com/traefik/traefik/releases/tag/v2.11.37
- https://github.com/traefik/traefik/releases/tag/v3.6.8
Workarounds
No workaround
For more information
If you have any questions or comments about this advisory, please open an issue.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- None
Affected packages
| Package | Affected | Fixed |
|---|---|---|
github.com/traefik/traefikGo | through 1.7.34 | None known |
github.com/traefik/traefik/v2Go | through 2.11.36 | 2.11.37 |
github.com/traefik/traefik/v3Go | through 3.6.7 | 3.6.8 |
github.com/traefik/traefik/v2Go | before 2.11.37 | 2.11.37 |
github.com/traefik/traefik/v3Go | before 3.6.8 | 3.6.8 |
github.com/traefik/traefikGo | All versions | None known |
What each source reports
GitHub Advisories Score used
Traefik affected by TLS ClientAuth Bypass on HTTP/3
Summary
There is a potential vulnerability in Traefik managing HTTP/3 connections.
More details in the CVE-2025-68121.
Patches
- https://github.com/traefik/traefik/releases/tag/v2.11.37
- https://github.com/traefik/traefik/releases/tag/v3.6.8
Workarounds
No workaround
For more information
If you have any questions or comments about this advisory, please open an issue.
- Record
GHSA-gv8r-9rw9-9697- CVSS 4.0
- 7.8 High
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N - CVSS 3.1
- 10.0 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N - Weakness
- CWE-1395
- Updated
- 2026-11-02
OSV
Traefik affected by TLS ClientAuth Bypass on HTTP/3
Summary
There is a potential vulnerability in Traefik managing HTTP/3 connections.
More details in the CVE-2025-68121.
Patches
- https://github.com/traefik/traefik/releases/tag/v2.11.37
- https://github.com/traefik/traefik/releases/tag/v3.6.8
Workarounds
No workaround
For more information
If you have any questions or comments about this advisory, please open an issue.
- Record
GHSA-gv8r-9rw9-9697- CVSS 4.0
- 7.8 High
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N - CVSS 3.1
- 10.0 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N - Weakness
- CWE-1395
- Updated
- 2026-11-02
OSVGO-2026-4530No score
Traefik affected by TLS ClientAuth Bypass on HTTP/3 in github.com/traefik/traefik
Traefik affected by TLS ClientAuth Bypass on HTTP/3 in github.com/traefik/traefik
- Record
GO-2026-4530- Updated
- 2026-11-02
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | GitHub Advisories, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.