Not a U.S. government website. NDD is an independent vulnerability database by Volerion and is not affiliated with or endorsed by NIST or NVD.
VOLERION
Volerion Security Research

NOT DEFERRED DATABASE

VULNERABILITIES

CVE-2026-92023 Details

Description

Use-after-free in the XML component. This vulnerability was fixed in Firefox 156, Firefox ESR 115.41, Firefox ESR 140.16, Firefox ESR 153.3, Thunderbird 156, Thunderbird 140.16, and Thunderbird 153.3.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: CISA-ADPCVSS-B:8.8 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URLSource(s)Tag(s)
https://bugzilla.mozilla.org/show_bug.cgi?id=2068342 [email protected]
https://www.mozilla.org/security/advisories/mfsa2026-90/ [email protected]
https://www.mozilla.org/security/advisories/mfsa2026-91/ [email protected]
https://www.mozilla.org/security/advisories/mfsa2026-92/ [email protected]
https://www.mozilla.org/security/advisories/mfsa2026-93/ [email protected]

see all 8 references

Weakness Enumeration

CWE-IDCWE NameSource
CWE-416Use After FreeCISA-ADP

Affected Products

No affected product data is available for this CVE.

Change History

4 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-92023
NVD Published Date:
Sep 15, 2026
NVD Last Modified:
Sep 20, 2026
Source:
[email protected]
CVE-2026-92023 Details - Not Deferred