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.

Project Subscriptions

Vendors Products
Mozilla Subscribe
Firefox Subscribe
Thunderbird Subscribe
Advisories
Source ID Title
Debian DLA Debian DLA DLA-4575-1 firefox-esr security update
Debian DLA Debian DLA DLA-4582-1 thunderbird security update
Debian DSA Debian DSA DSA-6254-1 firefox-esr security update
Debian DSA Debian DSA DSA-6267-1 thunderbird security update
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

References
Link Providers
https://access.redhat.com/errata/RHSA-2026:19160 cve-icon
https://access.redhat.com/errata/RHSA-2026:20566 cve-icon
https://access.redhat.com/errata/RHSA-2026:20574 cve-icon
https://access.redhat.com/errata/RHSA-2026:21381 cve-icon
https://access.redhat.com/errata/RHSA-2026:22325 cve-icon
https://access.redhat.com/errata/RHSA-2026:22643 cve-icon
https://access.redhat.com/errata/RHSA-2026:24508 cve-icon
https://access.redhat.com/errata/RHSA-2026:24509 cve-icon
https://access.redhat.com/errata/RHSA-2026:24510 cve-icon
https://access.redhat.com/errata/RHSA-2026:24511 cve-icon
https://access.redhat.com/errata/RHSA-2026:24516 cve-icon
https://access.redhat.com/errata/RHSA-2026:24755 cve-icon
https://access.redhat.com/errata/RHSA-2026:24983 cve-icon
https://access.redhat.com/errata/RHSA-2026:25015 cve-icon
https://access.redhat.com/errata/RHSA-2026:26174 cve-icon
https://access.redhat.com/errata/RHSA-2026:26268 cve-icon
https://access.redhat.com/errata/RHSA-2026:26269 cve-icon
https://access.redhat.com/errata/RHSA-2026:26270 cve-icon
https://access.redhat.com/errata/RHSA-2026:26521 cve-icon
https://access.redhat.com/errata/RHSA-2026:26536 cve-icon
https://access.redhat.com/errata/RHSA-2026:26539 cve-icon
https://access.redhat.com/security/cve/CVE-2026-8090 cve-icon
https://bugzilla.mozilla.org/show_bug.cgi?id=2034352 cve-icon cve-icon
https://bugzilla.redhat.com/show_bug.cgi?id=2467709 cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2026-8090 cve-icon
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-8090.json cve-icon
https://www.cve.org/CVERecord?id=CVE-2026-8090 cve-icon
https://www.mozilla.org/security/advisories/mfsa2026-40/ cve-icon cve-icon
https://www.mozilla.org/security/advisories/mfsa2026-41/ cve-icon cve-icon
https://www.mozilla.org/security/advisories/mfsa2026-41/#CVE-2026-8090 cve-icon
https://www.mozilla.org/security/advisories/mfsa2026-42/ cve-icon cve-icon
https://www.mozilla.org/security/advisories/mfsa2026-43/ cve-icon cve-icon
https://www.mozilla.org/security/advisories/mfsa2026-44/ cve-icon cve-icon
History

Sat, 09 May 2026 00:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-825
References
Metrics threat_severity

None

threat_severity

Important


Fri, 08 May 2026 20:15:00 +0000

Type Values Removed Values Added
First Time appeared Mozilla thunderbird
CPEs cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*
cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:-:*:*:*
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:esr:*:*:*
Vendors & Products Mozilla thunderbird

Fri, 08 May 2026 13:00:00 +0000

Type Values Removed Values Added
Description Use-after-free in the DOM: Networking component. This vulnerability was fixed in Firefox 150.0.2, Firefox ESR 140.10.2, and Firefox ESR 115.35.2. 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.
References

Thu, 07 May 2026 15:00:00 +0000

Type Values Removed Values Added
First Time appeared Mozilla
Mozilla firefox
Vendors & Products Mozilla
Mozilla firefox

Thu, 07 May 2026 14:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-416
Metrics cvssV3_1

{'score': 7.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 07 May 2026 13:00:00 +0000

Type Values Removed Values Added
Description Use-after-free in the DOM: Networking component. This vulnerability was fixed in Firefox 150.0.2, Firefox ESR 140.10.2, and Firefox ESR 115.35.2.
Title Use-after-free in the DOM: Networking component
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: mozilla

Published:

Updated: 2026-07-29T12:04:39.110Z

Reserved: 2026-05-07T12:45:04.220Z

Link: CVE-2026-8090

cve-icon Vulnrichment

Updated: 2026-07-29T12:04:39.110Z

cve-icon NVD

Status : Modified

Published: 2026-05-07T13:16:13.967

Modified: 2026-07-28T13:19:08.860

Link: CVE-2026-8090

cve-icon Redhat

Severity : Important

Publid Date: 2026-05-07T12:45:04Z

Links: CVE-2026-8090 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-05-09T03:30:24Z

Weaknesses