CVE-2026-52718

MEDIUM
MEDIUM Priority: 0.03 BB Relevance: 63/100
Published: 2026-06-15 Modified: 2026-11-05 First seen: 2026-11-05 Status: active

Attack Surface

Network Low Complexity No Auth

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: Required
S: Unchanged
C: None
I: None
A: High

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 Classification (1)

References & Advisories (9)

https://access.redhat.com/errata/RHSA-2026:36749
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:36834
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:47069
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:47070
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:47071
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:47717
vendor-advisory x_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2486328
issue-tracking x_refsource_REDHAT

Bug Bounty Relevance

63 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity

CVSS Score

6.5 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

EPSS — Exploitation Probability

0.39%
Raw Score 0.003860
Percentile 33.2%
Date 2026-11-14

EPSS Trend

2026-11-14
0.00386
2026-11-13
0.00386
2026-11-12
0.00386
2026-11-10
0.00386
2026-11-09
0.00386
2026-11-08
0.00386
2026-11-07
0.00386
2026-11-06
0.00386
2026-11-05
0.00386

Intelligence Sources

mitre ref →
nvd ref →