Red HatCVE-2026-18649
Red Hat GStreamer gst-plugins-good: denial of service
High7.5CVE-2026-18649 · Published Aug 6, 2026 · updated Sep 23, 2026
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.
Affected versions
The source does not list versions here. See the source advisory for affected products and fixes.
Details and references
- CVSS 3.1
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Severity from
- the vendor (its own CVE record or advisory)
- Weakness
- CWE-770
- www.cve.org/CVERecord?id=CVE-2026-18649
- nvd.nist.gov/vuln/detail/CVE-2026-18649
- 0xsemizzz.vercel.app/projects/cve-2026-18649-gstreamer-rtp-dos/
- access.redhat.com/errata/RHSA-2026:53451
- access.redhat.com/errata/RHSA-2026:53452
- access.redhat.com/errata/RHSA-2026:56966
- access.redhat.com/errata/RHSA-2026:61588
- access.redhat.com/errata/RHSA-2026:61943
- access.redhat.com/errata/RHSA-2026:65959
- access.redhat.com/errata/RHSA-2026:65999
- access.redhat.com/errata/RHSA-2026:69232
- access.redhat.com/errata/RHSA-2026:70264
- access.redhat.com/errata/RHSA-2026:70584
- access.redhat.com/errata/RHSA-2026:70803
- access.redhat.com/security/cve/CVE-2026-18649
- bugzilla.redhat.com/show_bug.cgi?id=2510614
- github.com/0xSemizzz/CVE-2026-18649
- gitlab.freedesktop.org/gstreamer/gstreamer-security/-/merge_requests/113
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