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Traefik has unexpected behavior with IPv4-mapped IPv6 addressesGHSA-7jmw-8259-q9jx

GHSA-7jmw-8259-q9jx is a security vulnerability in github.com/traefik/traefik/v3. A fix is available for github.com/traefik/traefik/v3 — see the affected versions and patch details below.

Also known asGO-2024-2917
Published
Updated
Affected
3 pkgs
Patched
3 / 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/v3🐹github.com/traefik/traefik/v2🐹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 various Is methods (IsPrivate, IsLoopback, etc) for IPv4-mapped IPv6 addresses.

They didn't work as expected returning false for addresses which would return true in their traditional IPv4 forms.

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 3 fixed
EcosystemPackageVulnerable rangeFix
🐹Gogithub.com/traefik/traefik/v3≥ 3.0.0-beta3&&< 3.0.23.0.2go get github.com/traefik/traefik/v3@v3.0.2
🐹Gogithub.com/traefik/traefik/v2all versions2.11.4go get github.com/traefik/traefik/v2@v2.11.4
🐹Gogithub.com/traefik/traefikall versions2.11.4go get github.com/traefik/traefik@v2.11.4

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/v3, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update github.com/traefik/traefik/v3 to 3.0.2 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-7jmw-8259-q9jx is resolved across your whole dependency graph.

  3. Workarounds

    If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Frequently Asked Questions

### Impact There is a vulnerability in [Go managing various Is methods (IsPrivate, IsLoopback, etc) for IPv4-mapped IPv6 addresses](https://groups.google.com/g/golang-announce/c/XbxouI9gY7k/m/TuoGEhxIEwAJ). They didn't work as expected returning false for addresses which would return true in their traditional IPv4 forms. ### References - [CVE-2024-24790](https://www.cve.org/CVERecord?id=CVE-2024-24790) ### Patches - https://github.com/traefik/traefik/releases/tag/v2.11.4 - https://github.com/traefik/traefik/releases/tag/v3.0.2 ### Workarounds No workaround. ### For more information I
O3 Security · Impact-Aware SCA

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Traefik has unexpected behavior with IPv4-mapped IPv6…