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CVE-2026-73473
Gstreamer1-plugins-good: gstreamer: missing subindex entry count validation in avidemux leading to denial of service
Medium5.5EPSS 0.12%
- Published
- Updated
- Reserved
- Assigned by
- redhat
Description
A flaw was found in GStreamer gst-plugins-good (avidemux). In the subindex parser, missing validation of the entry count can cause excessive memory allocation and denial of service. Because avidemux is auto-plugged by playbin, decodebin, and gst-discoverer, opening or previewing a crafted AVI is sufficient to trigger the issue. Fixed upstream in gst-plugins-good 1.28.6 (GStreamer-SA-2026-0072).
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| redhatCNA (assigner) | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |
| NVDNVD · Awaiting Analysis | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.12% · top 98% of all CVEs (6 Nov 2026)
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The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Weakness
Affected products
- affected < 1.28.6
References (4)
- https://access.redhat.com/security/cve/CVE-2026-73473 (opens in a new tab)vdb-entryx_refsource_REDHAT
- RHBZ#2514915 (opens in a new tab)issue-trackingx_refsource_REDHAT
- https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/12231 (opens in a new tab)
- https://gstreamer.freedesktop.org/security/sa-2026-0072.html (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
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[](https://trackcve.app/cve/CVE-2026-73473)Record last updated .