CVE-2026-18649: gst-plugins-good1.0

CVSS: 7.5v3.1HighAwaiting analysis

AliasesRHSA-2026:53451RHSA-2026:53452RHSA-2026:61588+5 more

Published 06-08-2026Last modified 23-09-2026

Vulnerability summary

CVE-2026-18649 is a high (CVSS 7.5) vulnerability in gst-plugins-good1.0. EPSS estimates a 0.96% chance of exploitation in the next 30 days, higher than 61.1% of scored vulnerabilities.

Overall risk

30/100

0100

Medium · default modelHow is this calculated?

CVSS score

7.5/10

010

High · v3.1 (CVE.org)

EPSS score

0.96%

0%100%

Low · 0.00 pp in 30 days

KEVNot listedIn no KEV catalog

RansomwareNone recordedNo known use recorded

Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 6

RHSA-2026:56966 RHSA-2026:65959 RHSA-2026:69232 RHSA-2026:70264 RHSA-2026:70584 RHSA-2026:70803

Timeline

06-08-2026
PublishedVulnerability first disclosed.
23-09-2026
Last modifiedVulnerability information updated.

Description

A flaw was found in the GStreamer gst-plugins-good package. The rtph264depay and rtph265depay RTP depayloader elements do not enforce a maximum size limit on the reassembly buffer used during fragmented RTP packet processing. A remote, unauthenticated attacker can send a continuous stream of RTP fragments without ever transmitting an end-of-fragment marker, causing the reassembly buffer to grow without bound until process memory is exhausted. This results in a denial of service through process termination.

CVSS metrics

5 scores · 5 sources · 1 version

v3.17.5

EPSS trend

Probability

0.96%

Chance of exploitation in the next 30 days

Percentile

61%

Versus all other CVEs

30-day change

0.00 pp

From 0.96% on 22-09-2026

22-09-202622-10-2026

EPSS score

0.96%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

CWE-770Allocation of Resources Without Limits or ThrottlingThe product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.

Affected systems

Redhat7 products

gstreamer1-plugins-good< 0:1.26.7-2.el10_2.3 | < 0:1.22.12-7.el9_8.2 | < 0:1.22.1-4.el9_4.2 | < 0:1.22.12-5.el9_6.2 | < 0:1.18.4-8.el9_2.2
gstreamer1-plugins-good-debuginfo< 0:1.26.7-2.el10_2.3 | < 0:1.22.12-7.el9_8.2 | < 0:1.22.1-4.el9_4.2 | < 0:1.22.12-5.el9_6.2 | < 0:1.18.4-8.el9_2.2
gstreamer1-plugins-good-debugsource< 0:1.26.7-2.el10_2.3 | < 0:1.22.12-7.el9_8.2 | < 0:1.22.1-4.el9_4.2 | < 0:1.22.12-5.el9_6.2 | < 0:1.18.4-8.el9_2.2
gstreamer1-plugins-good-gtk< 0:1.26.7-2.el10_2.3 | < 0:1.22.12-7.el9_8.2 | < 0:1.22.1-4.el9_4.2 | < 0:1.22.12-5.el9_6.2 | < 0:1.18.4-8.el9_2.2
gstreamer1-plugins-good-gtk-debuginfo< 0:1.26.7-2.el10_2.3 | < 0:1.22.12-7.el9_8.2 | < 0:1.22.1-4.el9_4.2 | < 0:1.22.12-5.el9_6.2 | < 0:1.18.4-8.el9_2.2

Show all 7

Debian1 product

gst-plugins-good1.0All versions (No fix recorded) | < 1.28.6-1

Ubuntu1 product

gst-plugins-good1.0< 1.8.3-1ubuntu0.5+esm2 | < 1.14.5-0ubuntu1~18.04.3+esm2 | < 1.16.3-0ubuntu1.3+esm2 | < 1.20.3-0ubuntu1.8 | < 1.24.2-1ubuntu1.6 | < 1.28.2-2ubuntu0.2

3 vendors · 9 products