CVE-2026-2436 MEDIUM

CVE-2026-2436: Libsoup: libsoup: denial of service via use-after-free in soupserver during tls handshake

Vendor Red Hat
Product Red Hat Enterprise Linux 10
Weakness CWE-825
Published March 26, 2026
Last update April 21, 2026

CVSS base score

6.5/10
Attack vector Network
Attack complexity High
Privileges required None
User interaction None
Confidentiality None
Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H

What the vulnerability does

01Description

A flaw was found in libsoup's SoupServer. A remote attacker could exploit a use-after-free vulnerability where the `soup_server_disconnect()` function frees connection objects prematurely, even if a TLS handshake is still pending. If the handshake completes after the connection object has been freed, a dangling pointer is accessed, leading to a server crash and a Denial of Service.

Key dates

02Disclosure timeline

March 26, 2026 CVE published
April 21, 2026 Record updated