CVE-2026-8090
Use-after-free in the DOM: Networking component
CVSS Score
7.3
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | mozilla |
| Product | firefox |
| Ecosystems | |
| Industries | Technology |
| Published | May 7, 2026 |
| Last Updated | May 8, 2026 |
Stay Ahead of the Next One
Get instant alerts for mozilla firefox
Be the first to know when new high vulnerabilities affecting mozilla firefox are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
Affected Versions
Mozilla / Firefox
All versions affected Mozilla / Thunderbird
All versions affected References
bugzilla.mozilla.org: https://bugzilla.mozilla.org/show_bug.cgi?id=2034352 mozilla.org: https://www.mozilla.org/security/advisories/mfsa2026-40/ mozilla.org: https://www.mozilla.org/security/advisories/mfsa2026-41/ mozilla.org: https://www.mozilla.org/security/advisories/mfsa2026-42/ mozilla.org: https://www.mozilla.org/security/advisories/mfsa2026-43/ mozilla.org: https://www.mozilla.org/security/advisories/mfsa2026-44/
Credits
Kevin Brosnan