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Vulnerabilities

Vulnerability · CVE-2026-86476

A flaw was found in gst-plugins-base.

Published Oct 14, 2026 · catalog updated Oct 15, 2026 · A flaw was found

Check if you run it

No confirmed exploitation is on record for CVE-2026-86476. EPSS is 0.21%. Act only if a listed version of A flaw was found is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (A flaw was found).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High8.4
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.21%
Remediation
Advisory link
Affected products
Debian:12 gst-plugins-base1.0 · Debian:13 gst-plugins-base1.0 · Debian:14 gst-plugins-base1.0

A flaw was found in gst-plugins-base. A heap buffer overflow can be triggered when processing video buffers whose attached GstVideoMeta metadata declares plane strides and offsets that exceed the actual backing memory allocation. The metadata is not range-checked during deserialization, and the video frame mapping code does not verify that the declared plane geometry fits within the buffer before allowing consumers to read or write video data. A local attacker who controls the sending side of a GStreamer inter-process IPC pipeline can deliver a crafted buffer carrying fabricated strides, causing the receiving process to read or write beyond heap boundaries. Successful exploitation can cause a denial of service or potentially allow code execution within the affected process.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • Debian:12 gst-plugins-base1.01.22.0-3, 1.22.0-3+deb12u1, 1.22.0-3+deb12u2
  • Debian:13 gst-plugins-base1.01.26.10-1, 1.26.2-1, 1.26.2-1+deb13u1
  • Debian:14 gst-plugins-base1.01.26.10-1, 1.26.2-1, 1.26.3-1

How to fix CVE-2026-86476

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-86476. EPSS is 0.21%. Act only if a listed version of A flaw was found is installed.

Which versions are affected?

Compare what you have installed with 1.22.0-3, 1.22.0-3+deb12u1, 1.22.0-3+deb12u2, 1.26.10-1, 1.26.2-1, 1.26.2-1+deb13u1, 1.26.10-1, 1.26.2-1, 1.26.3-1. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-787: Out-of-bounds Write. EPSS 0.21%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Debian security

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 14, 2026 · NIST NVD

    Detected

    A flaw was found in gst-plugins-base. A heap buffer overflow can be triggered when processing video buffers whose attached GstVideoMeta metadata declares plane strides and offsets that exceed the actual backing memory allocation. The metadata is not range-checked during deserialization, and the video frame mapping code does not verify that the declared plane geometry fits within the buffer before

  2. Oct 14, 2026 · NIST NVD

    Updated

    A flaw was found in gst-plugins-base. A heap buffer overflow can be triggered when processing video buffers whose attached GstVideoMeta metadata declares plane strides and offsets that exceed the actual backing memory allocation. The metadata is not range-checked during deserialization, and the video frame mapping code does not verify that the declared plane geometry fits within the buffer before

  3. Oct 14, 2026 · NIST NVD

    Updated

    A flaw was found in gst-plugins-base. A heap buffer overflow can be triggered when processing video buffers whose attached GstVideoMeta metadata declares plane strides and offsets that exceed the actual backing memory allocation. The metadata is not range-checked during deserialization, and the video frame mapping code does not verify that the declared plane geometry fits within the buffer before

  4. Oct 15, 2026 · OpenSSF OSV / OSV Scanner

    Updated

    A flaw was found in gst-plugins-base. A heap buffer overflow can be triggered when processing video buffers whose attached GstVideoMeta metadata declares plane strides and offsets that exceed the actual backing memory allocation. The metadata is not range-checked during deserialization, and the video frame mapping code does not verify that the declared plane geometry fits within the buffer before

Sources

  • CVE.orgVulnerability recordCVE-2026-86476

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-86476

    30-day exploitation probability 0.2%

    first.org
  • NIST NVDVulnerability recordCVE-2026-86476

    A flaw was found in gst-plugins-base. A heap buffer overflow can be triggered when processing video buffers whose attached GstVideoMeta metadata declares plane strides and offsets that exceed the actual backing memory allocation. The metadata is not range-checked during deseriali

    nvd.nist.gov
  • OpenSSF OSV / OSV ScannerPackage advisoryDEBIAN-CVE-2026-86476
    osv.dev

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.