CVSS 3.1
7.5 highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HCVE-2026-25949
High (7.5) in traefik traefik. EPSS 0.8% chance of exploitation in the next 30 days. Fixed in github.com/traefik/traefik/v3 3.6.8.
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.
Severity
- EPSS
- 0.8% chance of exploitation in the next 30 days; higher than 56% of CVEs (scores of 2026-10-31)
- CWEs
- CWE-400, CWE-770
- Published
- Modified
- Record from
- the NVD, synced
Affected
- traefik:traefik
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-89p3-4642-cr2w | Go | github.com/traefik/traefik/v3 | <3.6.8 | 3.6.8 |
| GO-2026-4484 | Go | github.com/traefik/traefik | all versions | no fix published |
| GO-2026-4484 | Go | github.com/traefik/traefik/v2 | all versions | no fix published |
| GO-2026-4484 | Go | github.com/traefik/traefik/v3 | <3.6.8 | 3.6.8 |
References
- https://github.com/traefik/traefik/commit/31e566e9f1d7888ccb6fbc18bfed427203c35678
- https://github.com/traefik/traefik/releases/tag/v3.6.8
- https://github.com/traefik/traefik/security/advisories/GHSA-89p3-4642-cr2w
- https://access.redhat.com/errata/RHSA-2026:6192
- https://access.redhat.com/security/cve/CVE-2026-25949