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CVE-2026-86476VulnerabilityPublished

Red Hat Security Advisory: gstreamer1-plugins-base security update

Affects Red Hat gstreamer1-plugins-baseSource GCVE Database

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Authoritative record:CVE-2026-86476· High 8.4

Not known to be exploited · CVSS 8.4 High.

Data as of 11 Nov 2026, 13:51 UTC

CVSS 3.1 base score
8.4High
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (redhat)CVSS 3.18.4
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 14 Oct 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 11 Nov 2026.

What to do

Affected software

ProductAffectedFixed in
Red Hat Enterprise Linux 10gstreamer1-plugins-baseAffected–Fixed in–
Red Hat Enterprise Linux 6gstreamer-plugins-baseAffected–Fixed in–
Red Hat Enterprise Linux 7gstreamer1-plugins-baseAffected–Fixed in–
Red Hat Enterprise Linux 7gstreamer-plugins-baseAffected–Fixed in–
Red Hat Enterprise Linux 8gstreamer1-plugins-baseAffected–Fixed in–
Red Hat Enterprise Linux 9gstreamer1-plugins-baseAffected–Fixed in–

AI-suggested

Red Hat has released updated gstreamer1-plugins-base packages for Red Hat Enterprise Linux 10 to fix this vulnerability. Users should apply the security update as detailed in Red Hat advisory RHSA-2026:98600. For update instructions, refer to https://access.redhat.com/articles/11258. No additional mitigation steps are indicated by the vendor.

Description

A heap buffer overflow vulnerability exists in the gstreamer1-plugins-base package due to unvalidated GstVideoMeta plane extents in the functions gst_video_frame_map_id and video_meta_deserialize. This issue affects Red Hat Enterprise Linux 10 across multiple architectures. A security update addressing this vulnerability has been released by Red Hat.

References

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