Traefik: Cross-user response poisoning via proxied CONNECT on Traefik's shared backend keep-alive pool
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
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| traefik | traefik | affected |
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Configuration 1 [-]
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No data.
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| Traefik | Traefik |
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| Source | ID | Title |
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Github GHSA |
GHSA-3ccp-42pg-hgv6 | Traefik: Cross-user response poisoning via proxied CONNECT on Traefik's shared backend keep-alive pool |
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: 1.1% (1.063% probability within 30 days)
| Type | Values Removed | Values Added |
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| CPEs | cpe:2.3:a:traefik:traefik:*:*:*:*:*:*:*:* | |
| Metrics |
cvssV3_1
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| Metrics |
ssvc
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| First Time appeared |
Traefik
Traefik traefik |
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| Vendors & Products |
Traefik
Traefik traefik |
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| Description | Traefik is an open source HTTP reverse proxy and load balancer. Prior to 2.11.53, 3.6.24, and 3.7.9, Traefik's default HTTP reverse proxy forwards a plain HTTP/2 or HTTP/3 CONNECT request and its body to an HTTP/1.1 upstream through a shared net/http.Transport. When the upstream answers the CONNECT with a keep-alive non-2xx response and does not drain the body, Traefik returns the desynchronized backend socket to its shared pool and reuses it for other clients. An unauthenticated attacker can use this behavior to make a different client read the attacker's smuggled response, which can include authenticated or private content from another request. The ForwardAuth middleware with forwardBody true and preserveRequestMethod true can re-issue a CONNECT with the buffered body attached, exposing the auth-client pool to the same desynchronization. This issue is fixed in 2.11.53, 3.6.24, and 3.7.9. | |
| Title | Traefik: Cross-user response poisoning via proxied CONNECT on Traefik's shared backend keep-alive pool | |
| Weaknesses | CWE-444 | |
| References |
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| Metrics |
cvssV4_0
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