CVE-2024-39321

7.5 HIGH
Published: July 05, 2024 Modified: November 25, 2025

Description

Traefik is an HTTP reverse proxy and load balancer. Versions prior to 2.11.6, 3.0.4, and 3.1.0-rc3 have a vulnerability that allows bypassing IP allow-lists via HTTP/3 early data requests in QUIC 0-RTT handshakes sent with spoofed IP addresses. Versions 2.11.6, 3.0.4, and 3.1.0-rc3 contain a patch for this issue. No known workarounds are available.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://github.com/traefik/traefik/releases/tag/v2.11.6
Source: security-advisories@github.com
Release Notes
https://github.com/traefik/traefik/releases/tag/v3.0.4
Source: security-advisories@github.com
Release Notes
https://github.com/traefik/traefik/releases/tag/v3.1.0-rc3
Source: security-advisories@github.com
Release Notes
https://github.com/traefik/traefik/security/advisories/GHSA-gxrv-wf35-62w9
Source: security-advisories@github.com
Patch Vendor Advisory
https://github.com/traefik/traefik/releases/tag/v2.11.6
Source: af854a3a-2127-422b-91ae-364da2661108
Release Notes
https://github.com/traefik/traefik/releases/tag/v3.0.4
Source: af854a3a-2127-422b-91ae-364da2661108
Release Notes
https://github.com/traefik/traefik/releases/tag/v3.1.0-rc3
Source: af854a3a-2127-422b-91ae-364da2661108
Release Notes
https://github.com/traefik/traefik/security/advisories/GHSA-gxrv-wf35-62w9
Source: af854a3a-2127-422b-91ae-364da2661108
Patch Vendor Advisory

8 reference(s) from NVD

Quick Stats

CVSS v3 Score
7.5 / 10.0
EPSS (Exploit Probability)
0.2%
39th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

Affected Vendors

traefik