CVE-2026-25949: Traefik · TCP readTimeout bypass via STARTTLS on Postgres
Affects github.com/traefik/traefik/v3Source GCVE Database
Not known to be exploited · CVSS 7.5 High : upgrade to 3.6.8 soon.
Data as of 26 Oct 2026, 08:30 UTC
- EPSS
- 0.7% chance of exploitation in 30 days – higher than 55% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 3.6.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitation evidence
Disclosed: evidence found.
CVE published 12 Feb 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Upgrade github.com/traefik/traefik/v3 to 3.6.8.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Gogithub.com/traefik/traefik/v3 | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
An official fix is available in Traefik version 3.6.8. Users should upgrade to version 3.6.8 or later to remediate this vulnerability. No other mitigations are specified or required according to the vendor advisory.
Description
A vulnerability in Traefik prior to version 3.6.8 allows an unauthenticated remote client to bypass the readTimeout setting on TCP entrypoints by sending a Postgres SSLRequest (STARTTLS) prelude and then stalling. This causes connections to remain open indefinitely, leading to resource exhaustion and denial of service.
References
- github.com/traefik/traefik/security/advisories/GHSA-89p3-4642-cr2w (opens in a new tab)
- nvd.nist.gov/vuln/detail/CVE-2026-25949 (opens in a new tab)
- github.com/traefik/traefik/commit/31e566e9f1d7888ccb6fbc18bfed427203c35678 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:6192 (opens in a new tab)
- access.redhat.com/security/cve/CVE-2026-25949 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2439522 (opens in a new tab)
- github.com/traefik/traefik (opens in a new tab)
- github.com/traefik/traefik/releases/tag/v3.6.8 (opens in a new tab)
- security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-25949.json (opens in a new tab)