high
CVE-2026-71324
Traefik cross-user response poisoning via proxied CONNECT (HTTP/2/3 CONNECT smuggled into the backend keep-alive pool)
- Severity
- high
- Affected product
- Traefik
- Affected versions
- Traefik ≥ 2.0.0, < 2.11.53
- Affected versions
- Traefik ≥ 3.0.0, < 3.6.24
- Affected versions
- Traefik ≥ 3.7.0, < 3.7.9
- Fixed in
- Traefik 2.11.53
- Fixed in
- Traefik 3.6.24
- Fixed in
- Traefik 3.7.9
- Detection basis
- Appliance fingerprint
- Shipped rule
- Traefik: Traefik cross-user response poisoning via proxied CONNECT (HTTP/2/3 CONNECT smuggled into the backend keep-alive pool)
- Added to NewScan
- 2026-08-23
- Detected by
- NewScan — free, self-hosted
How NewScan reports it
APPLIANCE FINGERPRINT
NewScan fingerprints the Traefik appliance and reports this CVE when the detected version falls inside the affected range below.
APPLIANCE FINGERPRINT
NewScan fingerprints the Traefik appliance and reports this CVE when the detected version falls inside the affected range below.
APPLIANCE FINGERPRINT
NewScan fingerprints the Traefik appliance and reports this CVE when the detected version falls inside the affected range below.
References
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