Out-of-bounds Read Affecting libsoup3-devel package, versions <0:3.7.2-1.amzn2023


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.39% (31st percentile)

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  • Snyk IDSNYK-AMZN2023-LIBSOUP3DEVEL-20249694
  • published29 Sept 2026
  • disclosed14 Jul 2026

Introduced: 14 Jul 2026

CVE-2026-15714  (opens in a new tab)
CWE-125  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 libsoup3-devel to version 0:3.7.2-1.amzn2023 or higher.
This issue was patched in ALAS2023-2026-3144.

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 Amazon-Linux. See How to fix? for Amazon-Linux:2023 relevant fixed versions and status.

An out-of-bounds read vulnerability was found in libsoup's multipart processing subsystem. The flaw exists in the soup_multipart_input_stream_read_headers() function inside soup-multipart-input-stream.c, which does not adequately restrict or validate the size of incoming multipart boundary strings. When processing a crafted HTTP response containing a malformed or oversized boundary parameter, the internal stream reader reads past the allocated buffer bounds. A remote, unauthenticated attacker can exploit this behavior to cause a service denial (DoS) through application failure or potentially read fragments of unauthorized memory metadata.

CVSS Base Scores

version 3.1