CVE-2026-8091
Incorrect boundary conditions in the Audio/Video: Playback component
CVSS Score
9.8
EPSS Score
0.5%
EPSS Percentile
38th
Incorrect 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.
| Vendor | mozilla |
| Product | firefox |
| Ecosystems | |
| Industries | Technology |
| Published | May 7, 2026 |
| Last Updated | Aug 11, 2026 |
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Affected Versions
Mozilla / Firefox
All versions affected Mozilla / Thunderbird
All versions affected References
bugzilla.mozilla.org: https://bugzilla.mozilla.org/show_bug.cgi?id=2029301 mozilla.org: https://www.mozilla.org/security/advisories/mfsa2026-30/ mozilla.org: https://www.mozilla.org/security/advisories/mfsa2026-33/ mozilla.org: https://www.mozilla.org/security/advisories/mfsa2026-36/ mozilla.org: https://www.mozilla.org/security/advisories/mfsa2026-39/ mozilla.org: https://www.mozilla.org/security/advisories/mfsa2026-42/ access.redhat.com: https://access.redhat.com/security/cve/CVE-2026-8091 bugzilla.redhat.com: https://bugzilla.redhat.com/show_bug.cgi?id=2467699 security.access.redhat.com: https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-8091.json access.redhat.com: https://access.redhat.com/errata/RHSA-2026:22708 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:22408 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:24719 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:19157 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:19153 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:19588 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:20586 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:22712 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:24718 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:24345 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:25014 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:22847 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:24717 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:21743 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:22410 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:24844 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:22324 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:24846 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:22409 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:24721 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:19370 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:19348
Credits
The Mozilla Fuzzing Team