Use After Free Affecting libsoup-lang package, versions <3.6.6-160000.2.1


Severity

Recommended
0.0
high
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
1.34% (70th percentile)

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  • Snyk IDSNYK-SLES1600-LIBSOUPLANG-17254014
  • published9 Jun 2026
  • disclosed29 May 2026

Introduced: 29 May 2026

CVE-2026-4271  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade SLES:16.0.0 libsoup-lang to version 3.6.6-160000.2.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libsoup-lang package and not the libsoup-lang package as distributed by SLES. See How to fix? for SLES:16.0.0 relevant fixed versions and status.

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).

CVSS Base Scores

version 3.1