CVE-2026-69243: Premature Http Upgrade Body Skip

Prematurely setting connection upgrade state or conditioning payload reader creation on upgrade status allows unread request body bytes to linger in the buffer, causing HTTP request smuggling (CWE-444).

Provally CuratedPublic repositoryMediumMedium confidenceVerifiedApache-2.0Python
greprules fetch cve-2026-69243-premature-http-upgrade-body-skip --engine opengrep

Description

Prematurely setting connection upgrade state or conditioning payload reader creation on upgrade status allows unread request body bytes to linger in the buffer, causing HTTP request smuggling (CWE-444).