PT-2026-33187 · Gstreamer · Gstreamer

CVE-2026-5056 · Published 2026-04-15 · Updated 2026-07-29

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions GStreamer (affected versions not specified)

Description An integer overflow and out-of-bounds access issue exists in the MOV/MP4 demuxer, specifically within the 'qtdemux' component. This can lead to a stack-based buffer overflow, potentially allowing for remote code execution.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Stack Overflow

Weakness Enumeration

CWE-121

Related Identifiers

CVE-2026-5056

USN-8285-1

ZDI-26-283

Affected Products

Gstreamer

References · 12

• https://osv.dev/vulnerability/USN-8285-1 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-5056 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-5056 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-5056 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2026-5056 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-5056 · Security Note
• https://zerodayinitiative.com/advisories/ZDI-26-283 · Security Note
• https://ubuntu.com/security/notices/USN-8285-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-5056 · Security Note
• https://gitlab.freedesktop.org/api/v4/projects/gstreamer%2Fgstreamer/repository/files/security-advisories%2Fsa-2026-0016.md/raw?ref=main · Vendor Advisory
• https://gstreamer.freedesktop.org/security/sa-2026-0016.html · Note
• http://openwall.com/lists/oss-security/2026/05/01/1 · Note