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Back to active CVEs
Medium · CVSS 5.3CVE-2026-77014

Libsoup: libsoup: integer truncation in sort_ranges() comparator causes silent omission of http range responsesCVE-2026-77014

Answer in brief

CVE-2026-77014 records a Medium severity (CVSS 5.3) vulnerability in Libsoup: libsoup: integer truncation in sort_ranges() comparator causes silent omission of http range responses. The current sources do not mark it as known exploited. The current feed maps Red Hat/container-tools:rhel8/podman (generic), Red Hat/gnome-clocks (generic), Red Hat/libsoup (generic), Red Hat/libsoup3 (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 20, 2026Updated Aug 25, 2026Source checked Oct 4, 2026First seen by HOL Aug 20, 2026Material review Aug 25, 2026
Upstream Advisory

Key facts

Risk
Medium · CVSS 5.3
Exploitation
Not marked as known exploited
Affected software
5 mapped packages or products
Fix availability
Not reported

Why this deserves its current priority

CVSS is 5.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Red Hat/container-tools:rhel8/podman (generic), Red Hat/gnome-clocks (generic), Red Hat/libsoup (generic), Red Hat/libsoup3 (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Red Hat/container-tools:rhel8/podmangeneric*Not reported
Red Hat/gnome-clocksgeneric*Not reported
Red Hat/libsoupgeneric*Not reported
Red Hat/libsoup3generic*Not reported
Red Hat/podmangeneric*Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Red Hat/container-tools:rhel8/podman, Red Hat/gnome-clocks, Red Hat/libsoup.
  2. 2Review the reported fix. Source-reported workaround: No mitigation is available for this vulnerability.

Evidence timeline and material changes

  1. Published upstream

    Aug 20, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Aug 25, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Aug 20, 2026

Sources and claim methodology

  • Source referenceaccess.redhat.com
  • Source referencebugzilla.redhat.com
  • Source referencegitlab.gnome.org
Upstream source description

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.

Quoted source text, attributed separately from HOL analysis.

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Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
CWE-197
Source
CVE List V5
Source checked
Oct 4, 2026
References
3 linked sources
Open source record