CVE-2026-8091
critical · 9.8Incorrect boundary conditions in the Audio/Video: Playback component. This vulnerability was fixed in Firefox 150, Thunderbird 150, Firefox ESR 140.10.1, Thunderbird 140.10.1, and Firefox ESR 115.35.2.
9.8
CVSS
0.5%
EPSS (exploit prob.)
40th
EPSS percentile
2026-05-07
Published
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weaknesses
CWE-754CWE-805
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| mozilla | firefox | < 115.35.2 |
| mozilla | firefox | >= 140.0, < 140.10.1 |
| mozilla | thunderbird | >= 140.0, < 140.10.1 |
Check a specific version with /api/v1/cve/match.
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=2029301
- https://www.mozilla.org/security/advisories/mfsa2026-30/
- https://www.mozilla.org/security/advisories/mfsa2026-33/
- https://www.mozilla.org/security/advisories/mfsa2026-36/
- https://www.mozilla.org/security/advisories/mfsa2026-39/
- https://www.mozilla.org/security/advisories/mfsa2026-42/
- https://access.redhat.com/errata/RHSA-2026:19153
- https://access.redhat.com/errata/RHSA-2026:19157
- https://access.redhat.com/errata/RHSA-2026:19348
- https://access.redhat.com/errata/RHSA-2026:19370
- https://access.redhat.com/errata/RHSA-2026:19588
- https://access.redhat.com/errata/RHSA-2026:20586
- https://access.redhat.com/errata/RHSA-2026:21743
- https://access.redhat.com/errata/RHSA-2026:22324
- https://access.redhat.com/errata/RHSA-2026:22408
- https://access.redhat.com/errata/RHSA-2026:22409
- https://access.redhat.com/errata/RHSA-2026:22410
- https://access.redhat.com/errata/RHSA-2026:22708
- https://access.redhat.com/errata/RHSA-2026:22712
- https://access.redhat.com/errata/RHSA-2026:22847
- https://access.redhat.com/errata/RHSA-2026:24345
- https://access.redhat.com/errata/RHSA-2026:24717
- https://access.redhat.com/errata/RHSA-2026:24718
- https://access.redhat.com/errata/RHSA-2026:24719
- https://access.redhat.com/errata/RHSA-2026:24721
Query this programmatically:
curl https://evil-db.io/api/v1/cve/CVE-2026-8091