CVE-2026-6762: Vulnerability in Mozilla Firefox
CVE-2026-6762 is a spoofing vulnerability in the DOM: Core & HTML component of Mozilla Firefox. This issue was addressed and fixed in Firefox 150, Firefox ESR 115. 35, and Firefox ESR 140. 10. The vulnerability is classified with moderate impact by Mozilla. It is part of a broader set of security fixes released in these versions. No known exploits in the wild have been reported for this vulnerability. Users running affected versions prior to the fixed releases are advised to update to the patched versions to mitigate the risk.
AI Analysis
Technical Summary
CVE-2026-6762 is a spoofing vulnerability affecting the DOM: Core & HTML component in Mozilla Firefox. The flaw could allow an attacker to present misleading or falsified content to users. Mozilla fixed this vulnerability in Firefox 150, Firefox ESR 115.35, and Firefox ESR 140.10 as part of their April 2026 security updates. The vendor advisory classifies the impact as moderate and does not report any active exploitation. This vulnerability is one among many memory safety and security issues addressed in these releases.
Potential Impact
The vulnerability allows spoofing in the DOM: Core & HTML component, which could mislead users by presenting falsified content. Mozilla rates the impact as moderate. There are no reports of known exploits in the wild. The fix is included in Firefox 150 and ESR versions 115.35 and 140.10, reducing the risk for users on updated versions.
Mitigation Recommendations
Mozilla has released official fixes for this vulnerability in Firefox 150, Firefox ESR 115.35, and Firefox ESR 140.10. Users and administrators should update to these versions or later to remediate the issue. No additional mitigation steps are indicated by the vendor advisory.
CVE-2026-6762: Vulnerability in Mozilla Firefox
Description
CVE-2026-6762 is a spoofing vulnerability in the DOM: Core & HTML component of Mozilla Firefox. This issue was addressed and fixed in Firefox 150, Firefox ESR 115. 35, and Firefox ESR 140. 10. The vulnerability is classified with moderate impact by Mozilla. It is part of a broader set of security fixes released in these versions. No known exploits in the wild have been reported for this vulnerability. Users running affected versions prior to the fixed releases are advised to update to the patched versions to mitigate the risk.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-6762 is a spoofing vulnerability affecting the DOM: Core & HTML component in Mozilla Firefox. The flaw could allow an attacker to present misleading or falsified content to users. Mozilla fixed this vulnerability in Firefox 150, Firefox ESR 115.35, and Firefox ESR 140.10 as part of their April 2026 security updates. The vendor advisory classifies the impact as moderate and does not report any active exploitation. This vulnerability is one among many memory safety and security issues addressed in these releases.
Potential Impact
The vulnerability allows spoofing in the DOM: Core & HTML component, which could mislead users by presenting falsified content. Mozilla rates the impact as moderate. There are no reports of known exploits in the wild. The fix is included in Firefox 150 and ESR versions 115.35 and 140.10, reducing the risk for users on updated versions.
Mitigation Recommendations
Mozilla has released official fixes for this vulnerability in Firefox 150, Firefox ESR 115.35, and Firefox ESR 140.10. Users and administrators should update to these versions or later to remediate the issue. No additional mitigation steps are indicated by the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mozilla
- Date Reserved
- 2026-04-21T12:40:56.529Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
- Vendor Advisory Urls
- [{"url":"https://www.mozilla.org/security/advisories/mfsa2026-30/","vendor":"Mozilla"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-31/","vendor":"Mozilla"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-32/","vendor":"Mozilla"}]
Threat ID: 69e7789c19fe3cd2cdd163e8
Added to database: 4/21/2026, 1:16:12 PM
Last enriched: 4/21/2026, 1:46:03 PM
Last updated: 4/21/2026, 3:14:42 PM
Views: 2
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