CVE-2026-109754: Vulnerability in Mozilla Firefox
Description
Incorrect boundary conditions in the DOM: Editor component. This vulnerability was fixed in Firefox 158, Firefox ESR 153.5, Thunderbird 158, and Thunderbird 153.5.
Affected software
Mozilla
Firefox
Mozilla
Thunderbird
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability concerns incorrect boundary conditions within the Document Object Model (DOM) Editor component of Mozilla Firefox. The issue was resolved by Mozilla in Firefox 158 and Firefox ESR 153.5, as documented in their security advisories. No further technical details or CVSS scoring are provided.
Potential Impact
The vulnerability could potentially allow for unexpected behavior or security issues related to DOM editing in affected Firefox versions prior to 158 and ESR versions prior to 153.5. However, no known exploits have been reported, and the vendor has issued fixes.
Mitigation Recommendations
Users and administrators should update Firefox to version 158 or later, or Firefox ESR to version 153.5 or later, to remediate this vulnerability. The vendor advisories provide official fixes.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mozilla
- Date Reserved
- 2026-10-13T00:29:58.679Z
- State
- PUBLISHED
- Vendor Advisory Urls
- [{"url":"https://www.mozilla.org/security/advisories/mfsa2026-106/","vendor":"Mozilla"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-108/","vendor":"Mozilla"}]
Threat ID: 6ace2c4d2cdf04f65661d556
Added to database: 10/13/2026, 13:04:13 UTC
Last enriched: 10/13/2026, 13:34:44 UTC
Last updated: 10/13/2026, 18:57:33 UTC
Views: 8
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