Numeric Truncation Error Affecting libsoup3 package, versions <3.0.7-0ubuntu1+esm9


Severity

Recommended
0.0
medium
0
10

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.23% (13th percentile)

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  • Snyk IDSNYK-UBUNTU2204-LIBSOUP3-19169832
  • published1 Oct 2026
  • disclosed20 Aug 2026

Introduced: 20 Aug 2026

CVE-2026-77014  (opens in a new tab)
CWE-197  (opens in a new tab)

How to fix?

Upgrade Ubuntu:22.04 libsoup3 to version 3.0.7-0ubuntu1+esm9 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libsoup3 package and not the libsoup3 package as distributed by Ubuntu. See How to fix? for Ubuntu:22.04 relevant fixed versions and status.

A flaw was found in libsoup's SoupServer HTTP Range header processing. The sort_ranges() comparator in soup-message-headers.c truncates a 64-bit subtraction result to 32-bit int, flipping the sign for range offsets differing by more than INT_MAX. This causes silent omission of requested byte ranges from HTTP 206 Partial Content responses on resources larger than approximately 2 GB.

CVSS Base Scores

version 3.1