CVE-2026-124912: Mozilla Firefox · Spoofing issue in the DOM: Security component
Affects Mozilla FirefoxSource CVE Database V5
Not known to be exploited.
Data as of 10 Nov 2026, 13:50 UTC
Rated High by Threat Radar's AI analysis · CVSS not yet scored by NVD
Thin evidence
One scorer or noneExploitation evidence
Disclosed: evidence found.
CVE published 10 Nov 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 10 Nov 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Mozilla Firefox | Affected
| Fixed in
|
AI-suggested
Users and administrators should update Firefox to version 160 or later, or Firefox ESR 153.7 or later, where this vulnerability has been fixed. Applying the official update fully mitigates the issue.
Description
CVE-2026-124912 is a spoofing vulnerability in the DOM security component of Mozilla Firefox. This issue was addressed and fixed in Firefox version 160 and Firefox ESR 153.7. The vulnerability could allow an attacker to spoof content within the Document Object Model, potentially misleading users or bypassing security checks.