Go/github.com/traefik/traefik/v2 CVE-2026-39858: critical 10, EPSS 0.48%
Traefik: Pre-authentication decision bypass due to forwarded alias spoofing in github.com/traefik/traefik
Action: Upgrade github.com/traefik/traefik/v2 to 2.11.43 or later.
go get github.com/traefik/traefik/v2@v2.11.43Affected
| introduced | fixed | last affected |
|---|---|---|
| 0 | 2.11.43 | - |
Fixed versions
| 2.11.43 |
Sources
- osv: GO-2026-5149#Go/github.com/traefik/traefik/v2
- nvd: CVE-2026-39858
- https://github.com/traefik/traefik/security/advisories/GHSA-5m6w-wvh7-57vm
- https://github.com/traefik/traefik/releases/tag/v2.11.43
- https://github.com/traefik/traefik/releases/tag/v3.6.14
- https://github.com/traefik/traefik/releases/tag/v3.7.0-rc.2
CVE-2026-39858 · published · modified · JSON