CVE-2026-52718
CVE-2026-52718 is a medium-severity vulnerability with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-617.
Key facts
- Severity: Medium (CVSS 3.x base score 6.5)
- EPSS exploit prediction: 0% (22nd percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-36805
- Weakness: CWE-617
- Published:
- Last modified:
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.
Frequently asked questions
- What is CVE-2026-52718?
- 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.
- How severe is CVE-2026-52718?
- CVE-2026-52718 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.
- Is CVE-2026-52718 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (22nd percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2026-52718?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2026-52718 have an EU (EUVD) identifier?
- Yes. CVE-2026-52718 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-36805.
- When was CVE-2026-52718 published?
- CVE-2026-52718 was published on 2026-06-15 and last updated on 2026-07-08.
References
- https://access.redhat.com/errata/RHSA-2026:36749
- https://access.redhat.com/security/cve/CVE-2026-52718
- https://bugzilla.redhat.com/show_bug.cgi?id=2486328
- https://gitlab.freedesktop.org/gstreamer/gstreamer/-/work_items/5103
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