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Vulnerability · Published Aug 20, 2026 · Assigned by zdi

CVE-2026-18299GStreamer rtpsbcdepay Use-After-Free Remote Code Execution Vulnerability

High 7.8

In plain English

A high-severity use-after-free in GStreamer from GStreamer. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 11% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.0)7.8High
Exploit odds (30 days)0.2%top 89.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

GStreamer rtpsbcdepay Use-After-Free Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of GStreamer. Interaction with this library is required to exploit this vulnerability but attack vectors may vary depending on the implementation. The specific flaw exists within the processing of RTP payload elements. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-29787.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
AlmaLinux:10gstreamer1-plugins-good1.26.7-2.el10_2.8ALSA-2026:59972
AlmaLinux:8gstreamer1-plugins-good1.16.1-7.el8_10.7ALSA-2026:59179
AlmaLinux:9gstreamer1-plugins-good1.22.12-7.el9_8.8ALSA-2026:59152
AlmaLinux:10gstreamer1-plugins-good-gtk1.26.7-2.el10_2.8ALSA-2026:59972
AlmaLinux:8gstreamer1-plugins-good-gtk1.16.1-7.el8_10.7ALSA-2026:59179
AlmaLinux:9gstreamer1-plugins-good-gtk1.22.12-7.el9_8.8ALSA-2026:59152
Debian:12gst-plugins-good1.01.22.0-5+deb12u4DEBIAN-CVE-2026-18299
Debian:13gst-plugins-good1.0no fix listedDEBIAN-CVE-2026-18299
Debian:14gst-plugins-good1.01.28.5-1DEBIAN-CVE-2026-18299
Rocky Linux:10gstreamer1-plugins-good0:1.26.7-2.el10_2.8RLSA-2026:59972
Rocky Linux:8gstreamer1-plugins-good0:1.16.1-7.el8_10.7RLSA-2026:59179
Rocky Linux:9gstreamer1-plugins-good0:1.22.12-7.el9_8.8RLSA-2026:59152
Ubuntu:22.04:LTSgst-plugins-good1.01.20.3-0ubuntu1.9USN-8798-1
Ubuntu:22.04:LTSgst-plugins-good1.01.20.3-0ubuntu1.9UBUNTU-CVE-2026-18299
Ubuntu:24.04:LTSgst-plugins-good1.01.24.2-1ubuntu1.7USN-8798-1
Ubuntu:24.04:LTSgst-plugins-good1.01.24.2-1ubuntu1.7UBUNTU-CVE-2026-18299
Ubuntu:26.04:LTSgst-plugins-good1.01.28.2-2ubuntu0.3UBUNTU-CVE-2026-18299
Ubuntu:26.04:LTSgst-plugins-good1.01.28.2-2ubuntu0.3USN-8798-1

Affected products (as reported)

VendorProductVersions
GStreamer GStreamer 99fde1184fe8b12d0721230941c1bf2080913183

Weakness: CWE-416 · Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

References