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CVE-2026-53703VulnerabilityPublished Updated

Red Hat Security Advisory: gstreamer1-plugins-ugly-free security update

Affects Red Hat gstreamer1-plugins-ugly-freeSource GCVE Database

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Mentioned vulnerabilities

Authoritative record:CVE-2026-53703· High 7.1

Not known to be exploited · CVSS 7.1 High.

Data as of 5 Nov 2026, 22:34 UTC

CVSS 3.1 base score
7.1High
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (redhat)CVSS 3.17.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 15 Jun 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 5 Nov 2026.

What to do

Affected software

ProductAffectedFixed in
Red Hat Enterprise Linux 10gstreamer1-plugins-ugly-freeAffected–Fixed in–
Red Hat Enterprise Linux 10.0 Extended Update Supportgstreamer1-plugins-ugly-freeAffected–Fixed in–
Red Hat Enterprise Linux 9gstreamer1-plugins-ugly-freeAffected–Fixed in–
Red Hat Enterprise Linux 9.6 Extended Update Supportgstreamer1-plugins-ugly-freeAffected–Fixed in–
Red Hat Enterprise Linux 7gstreamer1-plugins-ugly-freeAffected–Fixed in–
Red Hat Enterprise Linux 8gstreamer1-plugins-ugly-freeAffected–Fixed in–

Description

GStreamer is a streaming media framework, based on graphs of elements which operate on media data. This package contains plug-ins whose license is not fully compatible with LGPL. Security Fix(es): * gstreamer1-plugins-ugly-free: GStreamer: Out-of-bounds read in RealMedia demuxer audio stream header parser (CVE-2026-53703) * gstreamer1-plugins-ugly-free: GStreamer: Out-of-bounds read in RealMedia demuxer FILEINFO metadata parser (CVE-2026-53704) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

References

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