CVE-2026-25949
Fixed in a distro release EPSS <1%CVSS 7.5
Traefik is an HTTP reverse proxy and load balancer. Prior to 3.6.8, there is a potential vulnerability in Traefik managing STARTTLS requests. An unauthenticated client can bypass Traefik entrypoint respondingTimeouts.readTimeout by sending the 8-byte Postgres SSLRequest (STARTTLS) prelude and then stalling, causing connections to remain open indefinitely, leading to a denial of service. This vulnerability is fixed in 3.6.8.
Products: traefik, Red Hat OpenShift Dev Spaces 3.27
Fixed upstream
| Ecosystem | Package | Fixed in |
|---|---|---|
| Go | github.com/traefik/traefik | no fix |
| Go | github.com/traefik/traefik/v2 | no fix |
| Go | github.com/traefik/traefik/v3 | 3.6.8 |
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Chainguard | traefik-2.11 | 2.11.38-r0 |
| Chainguard | traefik-3.5 | 3.5.6-r6 |
| Chainguard | traefik-fips-2.11 | 2.11.51-r0 |
| Chainguard | traefik-fips-3.5 | no fix |
| Wolfi | traefik-3.5 | 3.5.6-r6 |
| openSUSE Leap 15.6 | govulncheck-vulndb | 0.0.20260226T182644-150000.1.149.1 |
| openSUSE Leap 16.0 | govulncheck-vulndb | 0.0.20260723T184607-160000.1.1 |
| openSUSE Tumbleweed | traefik | 3.6.8-1.1 |