6.5

CVE-2026-52718: Gstreamer1-plugins-bad-free: gstreamer: denial of service via av1 tile_list_obu parser byte/bit confusion

Awaiting analysis
AliasesSUSE-SU-2026:23274-1SUSE-SU-2026:23308-1SUSE-SU-2026:3527-1
Published 15-06-2026Last modified 30-07-2026

Vulnerability summary

CVE-2026-52718 is a medium (CVSS 6.5) Reachable Assertion vulnerability in gst-plugins-bad1.0. EPSS estimates a 0.71% chance of exploitation in the next 30 days, higher than 52.9% of scored vulnerabilities.

Overall risk
26/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.5/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.71%
0%100%
Low · +0.32 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 7 · Related 1
OPENSUSE-SU-2026:11088-1RHSA-2026:36749RHSA-2026:36834RHSA-2026:47069RHSA-2026:47070RHSA-2026:47071

Timeline

  1. 15-06-2026
    PublishedVulnerability first disclosed.
  2. 30-07-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.71%

Chance of exploitation in the next 30 days

Percentile

53%

Versus all other CVEs

30-day change

Increase +0.32 pp

From 0.39% on 22-09-2026

22-09-202622-10-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Suse6 products
  • gstreamer-plugins-bad&distro=SUSE Linux Enterprise Module for Basesystem 15 SP7< 1.24.0-150600.4.12.1
  • gstreamer-plugins-bad&distro=SUSE Linux Enterprise Module for Desktop Applications 15 SP7< 1.24.0-150600.4.12.1
  • gstreamer-plugins-bad&distro=SUSE Linux Enterprise Module for Package Hub 15 SP7< 1.24.0-150600.4.12.1
  • gstreamer-plugins-bad&distro=SUSE Linux Enterprise Server 16.0< 1.26.7-160000.4.1
  • gstreamer-plugins-bad&distro=SUSE Linux Enterprise Server for SAP applications 16.0< 1.26.7-160000.4.1
Debian1 product
  • gst-plugins-bad1.0All versions (No fix recorded) | < 1.22.0-4+deb12u8 | < 1.26.2-3+deb13u2 | < 1.28.4-1
Opensuse1 product
  • gstreamer-plugins-bad&distro=openSUSE Leap 16.0< 1.26.7-160000.4.1
Ubuntu1 product
  • gst-plugins-bad1.0All versions (No fix recorded)

4 vendors · 9 products

References

22 links
Show all 22 references