Out-of-bounds Read Affecting libsoup3-devel package, versions <0:3.6.5-3.el10_2.20


Severity

Recommended
0.0
high
0
10

Based on AlmaLinux security rating.

Threat Intelligence

EPSS
0.4% (35th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-ALMALINUX10-LIBSOUP3DEVEL-21160144
  • published17 Oct 2026
  • disclosed15 Oct 2026

Introduced: 15 Oct 2026

NewCVE-2026-102558  (opens in a new tab)
CWE-125  (opens in a new tab)

How to fix?

Upgrade AlmaLinux:10 libsoup3-devel to version 0:3.6.5-3.el10_2.20 or higher.
This issue was patched in ALSA-2026:83618.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libsoup3-devel package and not the libsoup3-devel package as distributed by AlmaLinux. See How to fix? for AlmaLinux:10 relevant fixed versions and status.

A flaw was found in libsoup. When max-incoming-payload-size is unlimited (0), SoupWebsocketConnection could grow its incoming GByteArray based on an attacker-controlled frame length until the length wrapped, causing a heap buffer overflow while reading frame data.

CVSS Base Scores

version 3.1