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CVE-2026-8091

Published: May 7, 2026

Modified: May 8, 2026

PUBLISHED

Description

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	Product	Versions
Mozilla	Firefox	unaffected `115.35.2 - <= 115.` unaffected `140.10.1 - <= 140.` unaffected `150 - <= *`
Mozilla	Thunderbird	unaffected `140.10.1 - <= 140.` unaffected `150 - <= `

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/

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