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🐹 Go
Not in CISA KEV
MEDIUM severity

Traefik vulnerable to GO issue allowing malformed DNS message to cause infinite loopGHSA-f7cq-5v43-8pwp

MEDIUM

GHSA-f7cq-5v43-8pwp is a medium-severity (CVSS 5.3) vulnerability in github.com/traefik/traefik/v2. A fix is available for github.com/traefik/traefik/v2 — see the affected versions and patch details below.

Also known asGO-2024-2880
Published
Updated
Affected
3 pkgs
Patched
2 / 3
Exploits
None indexed
Exploitation data as of Aug 7, 2026 · OSV.dev, FIRST.org (EPSS)

Real-World Exposure

3 pkgs affected
🐹github.com/traefik/traefik/v2🐹github.com/traefik/traefik/v3🐹github.com/traefik/traefik

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Go packages — download data is not available via public APIs for these ecosystems.

Description

Impact

There is a vulnerability in GO managing malformed DNS message, which impacts Traefik. This vulnerability could be exploited to cause a denial of service.

References

Patches

Workarounds

No workaround.

For more information

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

Affected Packages

3 total 2 fixed
EcosystemPackageVulnerable rangeFix
🐹Gogithub.com/traefik/traefik/v2all versions2.11.3go get github.com/traefik/traefik/v2@v2.11.3
🐹Gogithub.com/traefik/traefik/v3all versions3.0.1go get github.com/traefik/traefik/v3@v3.0.1
🐹Gogithub.com/traefik/traefikall versionsNo fix

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for github.com/traefik/traefik/v2, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update github.com/traefik/traefik/v2 to 2.11.3 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-f7cq-5v43-8pwp is resolved across your whole dependency graph.

  3. Workarounds

    Cap what an attacker can consume: apply request size, rate and timeout limits in front of the affected component, and run it with memory and CPU limits so exhaustion degrades one worker rather than the whole service.

Frequently Asked Questions

### Impact There is a vulnerability in [GO managing malformed DNS message](https://groups.google.com/g/golang-announce/c/wkkO4P9stm0), which impacts Traefik. This vulnerability could be exploited to cause a denial of service. ### References - [CVE-2024-24788](https://www.cve.org/CVERecord?id=CVE-2024-24788) ### Patches - https://github.com/traefik/traefik/releases/tag/v2.11.3 - https://github.com/traefik/traefik/releases/tag/v3.0.1 ### Workarounds No workaround. ### For more information If you have any questions or comments about this advisory, please [open an issue](https://github.co
O3 Security · Impact-Aware SCA

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Traefik vulnerable to GO issue allowing malformed DNS…