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Vulnerability record · CVE-2026-88012 · published 10 September 2026

CVE-2026-88012: Traefik allocation without limits vulnerability

Traefik · Traefik

Traefik is an open source HTTP reverse proxy and load balancer. From 2.8.2 until 2.11.56 and 3.7.12, HTTP/3 entrypoints do not apply entryPoints..transport.respondingTimeouts.readTimeout because the timeout is enforced on a TCP connection and the HTTP/3 server has no corresponding QUIC stream deadline. An unauthenticated client can use a slow request body, trickling data indefinitely while holding a request and an upstream connection open and exhausting backends with bounded connection pools. This issue is fixed in 2.11.56 and 3.7.12.

5.3 CVSS 3.1 Medium EPSS 0.52% · top 58.2% CWE-770 · Allocation without limits
5.3CVSS 3.1 base score
0.52%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
5References
14 Sep 2026Last modified by NVD

Description

Traefik is an open source HTTP reverse proxy and load balancer. From 2.8.2 until 2.11.56 and 3.7.12, HTTP/3 entrypoints do not apply entryPoints..transport.respondingTimeouts.readTimeout because the timeout is enforced on a TCP connection and the HTTP/3 server has no corresponding QUIC stream deadline. An unauthenticated client can use a slow request body, trickling data indefinitely while holding a request and an upstream connection open and exhausting backends with bounded connection pools. This issue is fixed in 2.11.56 and 3.7.12.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/traefik/traefik/commit/a8d0bc425859dde7481a6c9a324e610b81d754d0 Patch
https://github.com/traefik/traefik/pull/13717 Issue TrackingPatch
https://github.com/traefik/traefik/releases/tag/v2.11.56 PatchRelease Notes
https://github.com/traefik/traefik/releases/tag/v3.7.12 PatchRelease Notes
https://github.com/traefik/traefik/security/advisories/GHSA-7ghq-v6jf-g56c PatchVendor Advisory

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-88012), CISA KEV, FIRST EPSS (scores of 2026-10-02). This page is refreshed as NVD updates the record.