CVE-2026-18299 GStreamer rtpsbcdepay Use-After-Free Remote Code Execution Vulnerability
Remote attackers can execute arbitrary code via a use-after-free flaw in GStreamer's RTP payload processing, requiring interaction with the library.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-18299?
CVE-2026-18299 is a high-severity use after free vulnerability in Gstreamer Gstreamer, published on 20 Aug 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
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.
Weakness: CWE-416
Which versions are affected by CVE-2026-18299?
It affects 1 product.
Linux distribution packages (9)
gstreamer1-plugins-good AlmaLinux:10 | All versions | 1.26.7-2.el10_2.8 |
gstreamer1-plugins-good-gtk AlmaLinux:10 | All versions | 1.26.7-2.el10_2.8 |
gstreamer1-plugins-good Red Hat:enterprise_linux:10.2 | All versions | 0:1.26.7-2.el10_2.8 |
gstreamer1-plugins-good-debuginfo Red Hat:enterprise_linux:10.2 | All versions | 0:1.26.7-2.el10_2.8 |
gstreamer1-plugins-good-debugsource Red Hat:enterprise_linux:10.2 | All versions | 0:1.26.7-2.el10_2.8 |
gstreamer1-plugins-good-gtk Red Hat:enterprise_linux:10.2 | All versions | 0:1.26.7-2.el10_2.8 |
gstreamer1-plugins-good-gtk-debuginfo Red Hat:enterprise_linux:10.2 | All versions | 0:1.26.7-2.el10_2.8 |
gstreamer1-plugins-good-qt6-debuginfo Red Hat:enterprise_linux:10.2 | All versions | 0:1.26.7-2.el10_2.8 |
gstreamer1-plugins-good Rocky Linux:10 | All versions | 0:1.26.7-2.el10_2.8 |
Products include Gstreamer Gstreamer.
How do I fix CVE-2026-18299?
Apply the vendor's patch.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2026-18299 being exploited?
There is no known exploitation of CVE-2026-18299 in the wild and no public exploit code.
Other vulnerabilities in Gstreamer Gstreamer
- CVE-2026-3083 GStreamer rtpqdm2depay Out-Of-Bounds Write Remote Code Execution Vulnerability
- CVE-2026-3085 GStreamer rtpqdm2depay Heap-based Buffer Overflow Remote Code Execution Vulnerability
- CVE-2023-37328 GStreamer PGS File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability
- CVE-2023-37329 GStreamer SRT File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability
- CVE-2023-38103 GStreamer RealMedia File Parsing Integer Overflow Remote Code Execution Vulnerability
Sources
Also known as ALSA-2026:59972, DEBIAN-CVE-2026-18299, ECHO-bb2e-978a-52cc, GHSA-7xww-j5h2-23gh, MINI-rxc4-v4wg-2699, RHSA-2026:59972 and 3 more.