PT-2026-44752 · Libsoup · Libsoup

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CVE-2026-6324

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Published

2026-01-27

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Updated

2026-07-21

CVSS v3.1

4.8

Medium

VectorAV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
Name of the Vulnerable Software and Affected Versions libsoup (affected versions not specified)
Description An unsigned to signed conversion error exists in the soup body input stream read chunked() function. A remote attacker can exploit this by sending a malicious HTTP request when libsoup is used behind a non-libsoup proxy server or as a proxy in front of a non-libsoup backend server. This can lead to HTTP request smuggling, allowing the attacker to bypass security controls, poison web caches, or gain unauthorized access.
Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

HTTP Request/Response Smuggling

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Weakness Enumeration

Related Identifiers

BDU:2026-07787
CVE-2026-6324
ECHO-9599-97EA-884F
OESA-2026-2615
OESA-2026-2616
OESA-2026-2617
OESA-2026-2618

Affected Products

Libsoup