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VULNERABILITIES

CVE-2026-6762 Details

Description

Spoofing issue in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 150, Firefox ESR 115.35, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: CISA-ADPCVSS-B:6.3 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L

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=2021080 [email protected]Permissions Required
https://www.mozilla.org/security/advisories/mfsa2026-30/ [email protected]Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2026-31/ [email protected]Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2026-32/ [email protected]Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2026-33/ [email protected]Vendor Advisory

see all 6 references

Weakness Enumeration

CWE-IDCWE NameSource
CWE-290Authentication Bypass by SpoofingCISA-ADP

Affected Products

ProductVersions
mozilla firefox
< 140.10.0
< 150.0

CPE

  • cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*
  • cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*

Remediation

  • No remediation found in references.
mozilla thunderbird
>= 140.0, < 140.10.0

CPE

  • cpe:2.3:a:mozilla:thunderbird:*:*:*:*:esr:*:*:*

Remediation

  • No remediation found in references.

Change History

6 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-6762
NVD Published Date:
Apr 21, 2026
NVD Last Modified:
Jun 17, 2026
Source:
[email protected]
CVE-2026-6762 Details - Not Deferred