CVE-2026-8090

HIGH

7.3

Description

Use-after-free in the DOM: Networking component. This vulnerability was fixed in Firefox 150.0.2, Firefox ESR 140.10.2, Firefox ESR 115.35.2, Thunderbird 150.0.2, and Thunderbird 140.10.2.

CVE Details

CVSS v3.1 Score7.3

SeverityHIGH

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published5/7/2026

Last Modified5/8/2026

Sourcenvd

Honeypot Sightings0

Affected Products

mozilla:firefoxmozilla:thunderbird

Weaknesses (CWE)

CWE-416

References

https://bugzilla.mozilla.org/show_bug.cgi?id=2034352(security@mozilla.org)

https://www.mozilla.org/security/advisories/mfsa2026-40/(security@mozilla.org)

https://www.mozilla.org/security/advisories/mfsa2026-41/(security@mozilla.org)

https://www.mozilla.org/security/advisories/mfsa2026-42/(security@mozilla.org)

https://www.mozilla.org/security/advisories/mfsa2026-43/(security@mozilla.org)

https://www.mozilla.org/security/advisories/mfsa2026-44/(security@mozilla.org)

IOC Correlations

No correlations recorded

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