Advisory severityCritical9.1Red Hat Linux

Critical [CVE-2026-88007] Traefik HTTP/3 Backend NTLM Connection Reuse

This critical-severity Red Hat Linux advisory covers CVE-2026-88007; related products: Red Hat OpenShift Dev Spaces.

Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.

CVE-2026-88007 Source published Sep 10, 2026Source updated Sep 10, 2026

VulniPulse record published Sep 23, 2026Record updated Sep 28, 2026

CVE-2026-88007

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Summary

Traefik HTTP/3 Backend NTLM Connection Reuse. Red Hat rates this critical (CVSS 9.1).

Weakness: CWE-863.

Affected product named by the advisory: Red Hat OpenShift Dev Spaces.

Affected versions

No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.

Official advisory · high-confidence parse· fetched 8 days ago·verify at source

Fixed versions

2.11.57
3.7.13

Official advisory · high-confidence parse· fetched 8 days ago·verify at source

Mitigation checklist

Recommended fix / mitigation

Disable HTTP/3 on Traefik entrypoints handling traffic for backends utilizing NTLM or Negotiate authentication, or disable HTTP/3 globally in the static configuration by removing or setting 'experimental.http3' / entrypoint HTTP/3 settings to false until updated packages are deployed.

Official advisory · high-confidence parse· fetched 8 days ago·verify at source

Discussion(0)

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