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VulnerabilityPublished Updated

CVE-2026-119842: Gst plugins base1.0 · A flaw was found in GStreamer's gst-plugins-base MicroDVD subtitle parser

Affects gst-plugins-base1.0Source GCVE Database

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Authoritative record:CVE-2026-119842· Medium 6.5

Not known to be exploited · CVSS 6.5 Medium.

Data as of 5 Nov 2026, 12:49 UTC

CVSS 3.1 base score
6.5Medium
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (redhat)CVSS 3.16.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 30 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 5 Nov 2026.

What to do

Affected software

ProductAffectedFixed in
Ubuntu 24.04 LTSgst-plugins-base1.0pkg:deb/ubuntu/gst-plugins-base1.0?arch=source&distro=nobleOther threatsAffected
  • 1.22.6-1 – 1.24.2-1ubuntu0.5
12 affected builds
Fixed in–
Ubuntu 22.04 LTSgst-plugins-base1.0pkg:deb/ubuntu/gst-plugins-base1.0?arch=source&distro=jammyOther threatsAffected
  • 1.18.5-1 – 1.20.1-1ubuntu0.7
11 affected builds
Fixed in–
Ubuntu Pro 20.04 LTSgst-plugins-base1.0pkg:deb/ubuntu/gst-plugins-base1.0?arch=source&distro=esm-infra/focalOther threatsAffected
  • 1.16.1-1 – 1.16.3-0ubuntu1.4+esm3
15 affected builds
Fixed in–
Ubuntu Pro 18.04 LTSgst-plugins-base1.0pkg:deb/ubuntu/gst-plugins-base1.0?arch=source&distro=esm-infra/bionicOther threatsAffected
  • 1.12.3-1 – 1.14.5-0ubuntu1~18.04.3+esm4
16 affected builds
Fixed in–
Ubuntu Pro 16.04 LTSgst-plugins-base1.0pkg:deb/ubuntu/gst-plugins-base1.0?arch=source&distro=esm-infra-legacy/xenialOther threatsAffected
  • 1.6.0-1ubuntu1 – 1.8.3-1ubuntu0.3+esm5
19 affected builds
Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Avoid using untrusted MicroDVD (.sub) subtitle files and disable automatic subtitle loading if the media player supports this feature. Fixed versions are available starting from gst-plugins-base 1.28.2. Users should upgrade to this or later versions to remediate the vulnerability.

Description

A vulnerability in GStreamer's gst-plugins-base MicroDVD subtitle parser allows a specially crafted subtitle file to cause a NULL pointer dereference, leading to a crash of the media player process. This denial of service occurs when a user opens or plays media with a malformed MicroDVD (.sub) subtitle file. The issue requires user interaction and does not impact confidentiality or integrity.

References

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