Traefik: HTTP/2 frames can cause a running server to panic

Description

Summary

More Details:
- https://nvd.nist.gov/vuln/detail/CVE-2026-27141
- https://pkg.go.dev/golang.org/x/net/http2?tab=versions

Patches

  • https://github.com/traefik/traefik/releases/tag/v3.6.10
  • https://github.com/traefik/traefik/releases/tag/v2.11.40

For more information

If you have any questions or comments about this advisory, please open an issue.

Basic information

Type
reviewed
Severity
high
Advisory on GitHub
Open advisory ↗
Repository advisory
Open repository advisory ↗
Source code
Browse source ↗
Published (advisory)
2026-03-12 14:48:02 UTC
Updated
2026-03-12 14:48:03 UTC
GitHub reviewed
2026-03-12 14:48:02 UTC

CVSS Scores

Base score Version Severity Vector
7.7 4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network.
Attack complexity (AC:L)
Exploitation conditions are straightforward and stable.
Attack requirements (AT:N)
No additional preconditions are required beyond normal reachability.
Privileges required (PR:N)
No privileges are required.
User interaction (UI:N)
No user interaction is required.
Vulnerable system confidentiality impact (VC:N)
No confidentiality impact on the vulnerable system.
Vulnerable system integrity impact (VI:N)
No integrity impact on the vulnerable system.
Vulnerable system availability impact (VA:N)
No availability impact on the vulnerable system.
Subsequent system confidentiality impact (SC:N)
No confidentiality impact on subsequent systems.
Subsequent system integrity impact (SI:N)
No integrity impact on subsequent systems.
Subsequent system availability impact (SA:H)
High availability impact on subsequent systems.

Identifiers

Type Value
GHSA GHSA-4hjq-9h5c-252j ↗

CWEs

CWE id Name
CWE-476 NULL Pointer Dereference

Credits

  • WolverMinion (reporter)

Affected packages (2)

Vulnerable version ranges and first patched releases as published by GitHub.

Ecosystem Package Vulnerable range First patched Vulnerable functions
go github.com/traefik/traefik/v2 <= 2.11.39 2.11.40
go github.com/traefik/traefik/v3 <= 3.6.9 3.6.10

References

cvelogic Threat Intelligence