CVE-2026-8968

HIGHNVD 7.57.5—

7.5

Denial-of-service due to invalid pointer in the Audio/Video: Web Codecs component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.

CVSS v3: 7.5
EG Score: 7.5(high)
EPSS: 14.7%
KEV: Not listed

Published

May 19, 2026

Last Modified

May 20, 2026

References (5)

security@mozillahttps://bugzilla.mozilla.org/show_bug.cgi?id=2030467
security@mozillahttps://www.mozilla.org/security/advisories/mfsa2026-46/
security@mozillahttps://www.mozilla.org/security/advisories/mfsa2026-48/
security@mozillahttps://www.mozilla.org/security/advisories/mfsa2026-50/
security@mozillahttps://www.mozilla.org/security/advisories/mfsa2026-51/

Vendor Advisories for CVE-2026-8968(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

GHSA-g34x-mgc7-jqch
GitHub Security AdvisoriesHigh
Denial-of-service due to invalid pointer in the Audio/Video: Web Codecs component. This...

Frequently asked(5)

What is CVE-2026-8968?

CVE-2026-8968 is a high vulnerability published on May 19, 2026. Denial-of-service due to invalid pointer in the Audio/Video: Web Codecs component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.

When was CVE-2026-8968 disclosed?

CVE-2026-8968 was first published in the National Vulnerability Database on May 19, 2026, with the most recent update on May 20, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2026-8968 actively exploited?

CVE-2026-8968 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 14.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2026-8968?

CVE-2026-8968 has a CVSS v3 base score of 7.5 (NVD).

How do I remediate CVE-2026-8968?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-8968, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-8968

Explore →

Is Your Infrastructure Affected by CVE-2026-8968?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs

CVE-2026-8968

📅 Published

🔄 Last Modified

🔗 References (5)

📣 Vendor Advisories for CVE-2026-8968(1)

❓ Frequently asked(5)