CVE-2024-39321

moderate-risk
Published 2024-07-05

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.

Do I need to act?

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0.18% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.5/10 High
NETWORK / LOW complexity

Affected Products (4)

Affected Vendors

Traefik

References (8)

Release Notes https://github.com/traefik/traefik/releases/tag/v2.11.6
Release Notes https://github.com/traefik/traefik/releases/tag/v3.0.4
Release Notes https://github.com/traefik/traefik/releases/tag/v3.1.0-rc3
Patch https://github.com/traefik/traefik/security/advisories/GHSA-gxrv-wf35-62w9
Release Notes https://github.com/traefik/traefik/releases/tag/v2.11.6
Release Notes https://github.com/traefik/traefik/releases/tag/v3.0.4
Release Notes https://github.com/traefik/traefik/releases/tag/v3.1.0-rc3
Patch https://github.com/traefik/traefik/security/advisories/GHSA-gxrv-wf35-62w9
37
/ 100
moderate-risk
Severity 26/34 · High
Exploitability 1/34 · Minimal
Exposure 10/34 · Low