CVE detail
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 address space.
Buzz score
Why this CVE is surfacing
This all-time snapshot uses the same composite formula as Trending across a 30-year evidence window, rather than a current rolling window.
Buzz score components · mention 13.9 · diversity 11.5 · KEV 0.0 · OTX 0.0 · PoC 0.0
Why it matters now
Mention timeline
- Total mentions
- 0
- within the 30d window
- Peak daily
- 0
- highest bucket
Evidence
Source links by recency
3 source links · newest first
- https://gitlab.freedesktop.org/gstreamer/gstreamer/-/work_items/5109gitlab.freedesktop.org
No excerpt available.
Exploitgitlab.freedesktop.orgJun 23, 2026, 9:16 PM - https://bugzilla.redhat.com/show_bug.cgi?id=2491318bugzilla.redhat.com
No excerpt available.
Exploitbugzilla.redhat.comJun 23, 2026, 9:16 PM - https://access.redhat.com/security/cve/CVE-2026-12891access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comJun 23, 2026, 9:16 PM
Exploit code
Public exploit repository references
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0 repository references · best confidence N/A · max 0 stars
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