Ubuntu Security Notices guidance
Vendor revision: Nov 9, 2026USN-8890-1 fixed vulnerabilities in libsoup.
Vulnerability intelligence
CVE-2026-6324 and is rated Medium severity with a CVSS score of 4.8. It is not in the current CISA KEV record we collected. That does not prove exploitation has not occurred.
USN-8890-1 fixed vulnerabilities in libsoup.
USN-8890-1 fixed vulnerabilities in libsoup.
CBL-Mariner Releases
Vendor-listed releases
A flaw was found in libsoup. A remote attacker could exploit an unsigned to signed conversion error in the `soup_body_input_stream_read_chunked()` function by sending a malicious HTTP request.
This vulnerability occurs when libsoup operates behind a non-libsoup proxy server or as a proxy in front of a non-libsoup backend server. Successful exploitation can allow an attacker to bypass security controls, poison web caches, or gain unauthorized access.
Source: NVD