CVE-2026-52718 Gstreamer1-plugins-bad-free: gstreamer: denial of service via av1 tile_list_obu parser byte/bit confusion
A remote attacker can cause a denial of service by tricking a user into opening a crafted AV1 file, triggering a crash in the GStreamer parser.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-52718?
CVE-2026-52718 is a medium-severity denial of service vulnerability in Red Hat Enterprise Linux 10, published on 15 Jun 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
A denial of service vulnerability was found in GStreamer's AV1 codec parser in gst-plugins-bad. The gst_av1_parser_parse_tile_list_obu() function passes a byte count to a bit-reader API that expects a bit count, causing parser desynchronization. A remote attacker could trick a user into opening a specially crafted AV1 media file, triggering an assertion abort and causing the application to crash.
Weakness: CWE-617
Which versions are affected by CVE-2026-52718?
Linux distribution packages (7)
gstreamer-plugins-bad SUSE:Linux Enterprise Module for Basesystem 15 SP7 | All versions | 1.24.0-150600.4.12.1 |
gstreamer-plugins-bad SUSE:Linux Enterprise Module for Desktop Applications 15 SP7 | All versions | 1.24.0-150600.4.12.1 |
gstreamer-plugins-bad SUSE:Linux Enterprise Module for Package Hub 15 SP7 | All versions | 1.24.0-150600.4.12.1 |
gstreamer-plugins-bad SUSE:Linux Enterprise Server 16.0 | All versions | 1.26.7-160000.4.1 |
gstreamer-plugins-bad SUSE:Linux Enterprise Server for SAP applications 16.0 | All versions | 1.26.7-160000.4.1 |
gstreamer-plugins-bad SUSE:Linux Micro 6.2 | All versions | 1.26.7-160000.4.1 |
gstreamer-plugins-bad openSUSE:Leap 16.0 | All versions | 1.26.7-160000.4.1 |
How do I fix CVE-2026-52718?
Apply the vendor's patch.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-52718 being exploited?
There is no known exploitation of CVE-2026-52718 in the wild and no public exploit code.
Sources
Also known as CLSA-2026-1784131003, DEBIAN-CVE-2026-52718, ECHO-daae-39e9-f2c0, GHSA-4cjw-rphc-c5v6, SUSE-SU-2026:23274-1, SUSE-SU-2026:23308-1 and 3 more.