PT-2026-25895 · Red Hat · Red Hat Enterprise Linux 10+4

Published 2026-03-17 · Updated 2026-03-17 · CVE-2026-4271

NVD

CVSS v3.1

5.3

5.3

Medium

Base vector

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

A flaw was found in libsoup, a library for handling HTTP requests. This vulnerability, known as a Use-After-Free, occurs in the HTTP/2 server implementation. A remote attacker can exploit this by sending specially crafted HTTP/2 requests that cause authentication failures. This can lead to the application attempting to access memory that has already been freed, potentially causing application instability or crashes, resulting in a Denial of Service (DoS).

Fix

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

CVE-2026-4271

Affected Products

Red Hat Enterprise Linux 10

Red Hat Enterprise Linux 6

Red Hat Enterprise Linux 7

Red Hat Enterprise Linux 8

Red Hat Enterprise Linux 9

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2026-4271 · Security Note
• https://gitlab.gnome.org/GNOME/libsoup/-/issues/496 · Note
• https://access.redhat.com/security/cve/CVE-2026-4271 · Note
• https://bugzilla.redhat.com/show_bug.cgi?id=2448044 · Note