vulnerability / NVI-00015378 / Revision 1
Traefik: respondingTimeouts.readTimeout is not applied to HTTP/3, leaving slow-body uploads unbounded
GitHub lists this reviewed advisory for github.com/traefik/traefik/v2, github.com/traefik/traefik/v3. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.
This report has not inspected your inventory, configuration, deployed build, reachability or evidence. A catalog listing and a severity score do not establish exposure or compromise.
01 / Meaning
Why it matters
Published affected context helps an owner decide what evidence to gather. This report has not examined your application.
5.3 medium
GitHub source severity; exploitability and local consequence require separate evidence.
As of · GitHub Advisory Database
02 / Applicability
The affected context
Affected versions, configuration prerequisites and known exclusions are public. Confirm each one against the deployed service.
github.com/traefik/traefik/v2
source listed>= 2.8.2, < 2.11.56
## Summary There is a medium severity vulnerability in Traefik's HTTP/3 entry points: the `respondingTimeouts` settings were not applied to the HTTP/3 request path. `readTimeout` in particular is on by default at 60s and is documented as bounding the time to read the entire request including its body, but it is enforced as a deadline on the TCP connection, which cannot reach a QUIC stream, and Traefik's HTTP/3 server was constructed with no timeout of any kind. An unauthenticated client that trickles a request body therefore holds a request open for as long as it chooses, and with it one upstream connection per request, at negligible cost to itself. Backends with bounded connection pools are the practical pressure point. The HTTP/3 path lost these timeouts in v2.8.2, when a quic-go API change removed the embedded `http.Server` that had carried them; every release from v2.8.2 onward is affected, and releases before v2.8.2 are not. Traefik v2.8.2 through v2.10.x and v3.0 through v3.6 are affected and are no longer maintained: they will not receive a patch on their own line, and the remedy for their users is to upgrade to v2.11.56 or v3.7.12. ## Patches - https://github.com/traefi
github.com/traefik/traefik/v3
source listed>= 3.0.0, < 3.7.12
## Summary There is a medium severity vulnerability in Traefik's HTTP/3 entry points: the `respondingTimeouts` settings were not applied to the HTTP/3 request path. `readTimeout` in particular is on by default at 60s and is documented as bounding the time to read the entire request including its body, but it is enforced as a deadline on the TCP connection, which cannot reach a QUIC stream, and Traefik's HTTP/3 server was constructed with no timeout of any kind. An unauthenticated client that trickles a request body therefore holds a request open for as long as it chooses, and with it one upstream connection per request, at negligible cost to itself. Backends with bounded connection pools are the practical pressure point. The HTTP/3 path lost these timeouts in v2.8.2, when a quic-go API change removed the embedded `http.Server` that had carried them; every release from v2.8.2 onward is affected, and releases before v2.8.2 are not. Traefik v2.8.2 through v2.10.x and v3.0 through v3.6 are affected and are no longer maintained: they will not receive a patch on their own line, and the remedy for their users is to upgrade to v2.11.56 or v3.7.12. ## Patches - https://github.com/traefi
03 / Response
What to do next
- investigate
Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.
Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system. GitHub Advisory Database
A fixed release is not deployment evidence.
Check current vendor support and compatibility. After making a change, verify the deployed build and relevant runtime conditions. Keep the evidence, owner and time. An updated lockfile alone does not prove what is running.
04 / Limits
What this report cannot establish
- Customer inventory, deployment, reachability and exploitation have not been inspected.
05 / Provenance
Sources you can inspect
Each assertion retains its source. Mirrored records may repeat one underlying publisher; additional links are not independent corroboration.
- GHSA-7ghq-v6jf-g56c ↗
GitHub Advisory Database · vendor advisory
Observed . GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.
Public revision history
Only published revisions appear here. Routine fetches do not create a material-change event.
- Revision 1 ·
First indexed by Null; source disclosure date is shown separately.