GHSA-7ghq-v6jf-g56c: Traefik: respondingTimeouts.readTimeout is not applied to HTTP/3, leaving slow-body uploads unbounded
Summary
Traefik has a vulnerability where the `readTimeout` setting (which limits how long a request can take to be fully received, including its body) doesn't work for HTTP/3 connections. This means an attacker can send a request body very slowly and keep the connection open indefinitely, wasting server resources. The bug appeared in version 2.8.2 and affects all versions from 2.8.2 through 3.6.
Solution / Mitigation
Upgrade to Traefik v2.11.56 or v3.7.12. These versions contain patches that restore the timeout functionality to HTTP/3 entry points.
Vulnerability Details
EPSS: 0.0%
Yes
September 10, 2026
Classification
Affected Vendors
Affected Packages
Related Issues
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Original source: https://github.com/advisories/GHSA-7ghq-v6jf-g56c
First tracked: September 10, 2026 at 08:01 PM
Classified by LLM (prompt v3) · confidence: 75%