CVE Watch23 oct 2026

CVE-2026-115877

Twisted is an event-based framework for internet applications, supporting Python 3.6+. Prior to 26.10.0rc1, twisted.web.http.HTTPChannel.hea

CVSS

5.4

Medio

EPSS

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KEV

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Exploit Today

0-100

Publicado: 23 oct 2026 · Última mod.: 23 oct 2026 · CWE-444

EPSS · 30d

Sin historial EPSS suficiente todavía.

Descripción técnica

Twisted is an event-based framework for internet applications, supporting Python 3.6+. Prior to 26.10.0rc1, twisted.web.http.HTTPChannel.headerReceived rejects a NUL byte in an HTTP header value but accepts a bare carriage return or bare line feed. Because Twisted splits header lines only on CRLF, a hidden Content-Length header can remain folded into another value while a lenient front end treats the bare character as a line terminator. The resulting framing disagreement can smuggle a following request past front-end access controls, poison a shared connection or cache, and expose a later client to the wrong response. This issue is an incomplete-fix residual of earlier Twisted request-smuggling protections. This issue is fixed in version 26.10.0rc1.

Referencias oficiales

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