CVE-2026-8090
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.
- Score
- CVSS 3.1 7.5 High
- Status
- Modified - security@mozilla.org
- Published
- 2026-05-07
- Last modified
- 2026-10-26
- Weaknesses
- CWE-416, CWE-825
Affected products
- Firefox (Mozilla)
- Thunderbird (Mozilla)
- Enterprise Linux (Redhat)
- Enterprise Linux Eus (Redhat)
- Rhel Aus (Redhat)
- Rhel E4s (Redhat)
- Rhel Els (Redhat)
- Rhel Eus (Redhat)
- Rhel Eus Long Life (Redhat)
- Rhel Tus (Redhat)
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=2034352
- https://www.mozilla.org/security/advisories/mfsa2026-40/
- https://www.mozilla.org/security/advisories/mfsa2026-41/
- https://www.mozilla.org/security/advisories/mfsa2026-42/
- https://www.mozilla.org/security/advisories/mfsa2026-43/
- https://www.mozilla.org/security/advisories/mfsa2026-44/
- https://access.redhat.com/security/cve/CVE-2026-8090
- https://bugzilla.redhat.com/show_bug.cgi?id=2467709
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-8090.json
- https://access.redhat.com/errata/RHSA-2026:24983
- https://access.redhat.com/errata/RHSA-2026:24511
- https://access.redhat.com/errata/RHSA-2026:26539
- https://access.redhat.com/errata/RHSA-2026:19160
- https://access.redhat.com/errata/RHSA-2026:22325
- https://access.redhat.com/errata/RHSA-2026:20566
- https://access.redhat.com/errata/RHSA-2026:22643
- https://access.redhat.com/errata/RHSA-2026:24516
- https://access.redhat.com/errata/RHSA-2026:26270
- https://access.redhat.com/errata/RHSA-2026:25015
- https://access.redhat.com/errata/RHSA-2026:26536
- https://access.redhat.com/errata/RHSA-2026:24755
- https://access.redhat.com/errata/RHSA-2026:26268
- https://access.redhat.com/errata/RHSA-2026:24509
- https://access.redhat.com/errata/RHSA-2026:26269
- https://access.redhat.com/errata/RHSA-2026:24510
- https://access.redhat.com/errata/RHSA-2026:26174
- https://access.redhat.com/errata/RHSA-2026:24508
- https://access.redhat.com/errata/RHSA-2026:26521
- https://access.redhat.com/errata/RHSA-2026:20574
- https://access.redhat.com/errata/RHSA-2026:21381
