CVE-2026-8090
Use-after-free in the DOM: Networking component
- State
- Published
- Severity
- 7.3 High
- Published
- May 7, 2026
- Updated
- Jul 29, 2026
- Reserved
- May 7, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 7.3 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L | CISA-ADP |
| 3.1 | 7.5 High | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H | redhat-SADP |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
FirefoxMozilla |
|
ThunderbirdMozilla |
|
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-2026-8090vdb-entry
- RHBZ#2467709issue-tracking
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-8090.json
- https://access.redhat.com/errata/RHSA-2026:24983vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:24511vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:26539vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:19160vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:22325vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:20566vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:22643vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:24516vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:26270vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:25015vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:26536vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:24755vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:26268vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:24509vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:26269vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:24510vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:26174vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:24508vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:26521vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:20574vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:21381vendor-advisory
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