En bref
- CVE-2026-94439 est une vulnérabilité ÉLEVÉE (CVSS 7.5) touchant stdlib.
- Probabilité d'exploitation dans les 30 prochains jours (EPSS) : 0.41%, plus élevée que 35.8% des vulnérabilités.
- Correctif : mettre à jour vers 1.27.2, 1.26.9 ou plus récent.
| Package | Affected versions | Patched versions |
|---|
| stdlib Go | ≥ 1.27.0-0, < 1.27.2< 1.26.9
| 1.27.21.26.9
|
Description
When an HTTP server handler sends a 2xx response to an HTTP/1 CONNECT request and returns without hijacking the connection, the server improperly continues to read and serve requests from the connection. Since a 2xx response to an HTTP/1 CONNECT converts the connection into a tunnel, the server should not treat the connection as continuing to contain HTTP.
The impact of this misbehavior is mostly limited to potential request smuggling, where an intermediate proxy considers the data on the connection to be tunneled and the server considers it to be HTTP.
NVD description
When an HTTP server handler sends a 2xx response to an HTTP/1 CONNECT request and returns without hijacking the connection, the server improperly continues to read and serve requests from the connection. Since a 2xx response to an HTTP/1 CONNECT converts the connection into a tunnel, the server should not treat the connection as continuing to contain HTTP. The impact of this misbehavior is mostly limited to potential request smuggling, where an intermediate proxy considers the data on the connection to be tunneled and the server considers it to be HTTP.
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