CVE-2026-71326
CVE-2026-71326: 1 tracked advisory record across Red Hat. Compare vendor sources and published fix guidance.
Compare the source-linked records below. Ratings and product/version details belong to each advisory; they are not a single CVE-wide score or proof that every listed product is affected. How VulniPulse collects and checks evidence.
Vendor advisory comparison
Red Hat
1 advisory- Advisory severityLow3.8
Low [CVE-2026-71326] Authenticated identity spoofing via BasicAuth key collision
CVE-2026-71326Source published Source updated
Traefik is an open source HTTP reverse proxy and load balancer. From 3.6.11 until 3.6.25 and 3.7.10, Traefik's BasicAuth middleware in pkg/middlewares/auth/basic_auth.go deduplicates concurrent password checks with a singleflight key built from the delimiter-free concatenation of password and secret, allowing an attacker who has a valid credential and the stored hash to authenticate as an unconfigured username when headerField trusts the forwarded identity. This issue is fixed in 3.6.25 and 3.7.10. A flaw was found in Traefik. This identity spoofing is possible when the 'headerField' is configured to trust forwarded identity information. Red Hat OpenShift Dev Spaces bundles Traefik as a reverse proxy component. No Red Hat product is affected. Red Hat severity: Low — CVSS 3.8…
- Affected products in this advisory
- No product details extracted. Check the source bulletin.
- Source-reported affected versions
- Affected-version details not available in this record.
- Source-reported fixed versions
- 3.6.25
- 3.7.10
- Mitigation guidance
- No mitigation is necessary; Red Hat products ship Traefik versions outside the vulnerable range.
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