Bug 2439522 (CVE-2026-25949) - CVE-2026-25949 github.com/traefik/traefik: Traefik: Denial of Service via stalled STARTTLS requests
Summary: CVE-2026-25949 github.com/traefik/traefik: Traefik: Denial of Service via sta...
Keywords:
Status: NEW
Alias: CVE-2026-25949
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
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Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-02-12 21:01 UTC by OSIDB Bzimport
Modified: 2026-02-12 23:32 UTC (History)
1 user (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-02-12 21:01:37 UTC 
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.
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