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CVE-2026-12891

A flaw was found in the GStreamer gst-plugins-bad package. When processing a malformed H.266/VVC video stream with a crafted aspect ratio indicator value, the H.266 parser performs an out-of-bounds read of up to 8 bytes from adjacent memory. This flaw allows an attacker to craft a malicious H.266 video file or stream that, when processed by a GStreamer-based application, could leak limited memory contents through video metadata, potentially exposing sensitive information from the application's a
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:122b00fe3b498c5ff672fcc127ef3943821beb440ee3660780a3c62eafdb213e
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 3 assertions

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:10"],"defaultStatus":"affected","packageName":"gstreamer1-plugins-bad-free","product":"Red Hat Enterprise Linux 10","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:1daced68be4ea4af54254e3128d64b5812bd6a7770865e0370b86f466be0d652 · sha256:f05114b8a34f2284… · /containers/cna/affected/0

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:8"],"defaultStatus":"affected","packageName":"gstreamer1-plugins-bad-free","product":"Red Hat Enterprise Linux 8","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:1daced68be4ea4af54254e3128d64b5812bd6a7770865e0370b86f466be0d652 · sha256:f05114b8a34f2284… · /containers/cna/affected/1

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:9"],"defaultStatus":"affected","packageName":"gstreamer1-plugins-bad-free","product":"Red Hat Enterprise Linux 9","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:1daced68be4ea4af54254e3128d64b5812bd6a7770865e0370b86f466be0d652 · sha256:f05114b8a34f2284… · /containers/cna/affected/2

Affected products and versions

3 source assertions
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:10"],"defaultStatus":"affected","packageName":"gstreamer1-plugins-bad-free","product":"Red Hat Enterprise Linux 10","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:1daced68be4ea4af54254e3128d64b5812bd6a7770865e0370b86f466be0d652 · sha256:f05114b8a34f2284… · /containers/cna/affected/0
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:8"],"defaultStatus":"affected","packageName":"gstreamer1-plugins-bad-free","product":"Red Hat Enterprise Linux 8","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:1daced68be4ea4af54254e3128d64b5812bd6a7770865e0370b86f466be0d652 · sha256:f05114b8a34f2284… · /containers/cna/affected/1
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:9"],"defaultStatus":"affected","packageName":"gstreamer1-plugins-bad-free","product":"Red Hat Enterprise Linux 9","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:1daced68be4ea4af54254e3128d64b5812bd6a7770865e0370b86f466be0d652 · sha256:f05114b8a34f2284… · /containers/cna/affected/2

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":4.3,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:1daced68be4ea4af54254e3128d64b5812bd6a7770865e0370b86f466be0d652 · sha256:f05114b8a34f2284… · /containers/cna/metrics/1/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-125","description":"Out-of-bounds Read","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:1daced68be4ea4af54254e3128d64b5812bd6a7770865e0370b86f466be0d652 · sha256:f05114b8a34f2284… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions
{"tags":["vdb-entry","x_refsource_REDHAT"],"url":"https://access.redhat.com/security/cve/CVE-2026-12891"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:1daced68be4ea4af54254e3128d64b5812bd6a7770865e0370b86f466be0d652 · sha256:f05114b8a34f2284… · /containers/cna/references/0
{"name":"RHBZ#2491318","tags":["issue-tracking","x_refsource_REDHAT"],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2491318"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:1daced68be4ea4af54254e3128d64b5812bd6a7770865e0370b86f466be0d652 · sha256:f05114b8a34f2284… · /containers/cna/references/1
{"url":"https://gitlab.freedesktop.org/gstreamer/gstreamer/-/work_items/5109"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:1daced68be4ea4af54254e3128d64b5812bd6a7770865e0370b86f466be0d652 · sha256:f05114b8a34f2284… · /containers/cna/references/2

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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