Out-of-bounds Read Affecting libsoup-devel package, versions <0:2.56.0-6.amzn2.0.10


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.39% (31st percentile)

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  • Snyk IDSNYK-AMZN2-LIBSOUPDEVEL-20848078
  • published13 Oct 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:2 libsoup-devel to version 0:2.56.0-6.amzn2.0.10 or higher.
This issue was patched in ALAS2-2026-3998.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libsoup-devel package and not the libsoup-devel package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2 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