CVE-2026-4726: Vulnerability in Mozilla Firefox
Denial-of-service in the XML component. This vulnerability was fixed in Firefox 149 and Thunderbird 149.
AI Analysis
Technical Summary
CVE-2026-4726 is a high severity denial-of-service vulnerability affecting the XML component of Mozilla Firefox. The flaw could allow an attacker to cause the application to crash or become unresponsive by exploiting the XML processing. This vulnerability was fixed in Firefox 149. The CVSS vector indicates it is remotely exploitable without privileges or user interaction, impacting availability but not confidentiality or integrity. No active exploitation has been reported. The vendor advisory from Mozilla confirms the fix and recommends updating to Firefox 149.
Potential Impact
Successful exploitation of this vulnerability could result in denial-of-service conditions, causing Firefox to crash or hang when processing malicious XML content. This impacts availability but does not affect confidentiality or integrity. There are no reports of active exploitation in the wild.
Mitigation Recommendations
Mozilla has released an official fix for this vulnerability in Firefox 149. Users and administrators should update to Firefox 149 or later to remediate this issue. No additional mitigation steps are required once the update is applied.
CVE-2026-4726: Vulnerability in Mozilla Firefox
Description
Denial-of-service in the XML component. This vulnerability was fixed in Firefox 149 and Thunderbird 149.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-4726 is a high severity denial-of-service vulnerability affecting the XML component of Mozilla Firefox. The flaw could allow an attacker to cause the application to crash or become unresponsive by exploiting the XML processing. This vulnerability was fixed in Firefox 149. The CVSS vector indicates it is remotely exploitable without privileges or user interaction, impacting availability but not confidentiality or integrity. No active exploitation has been reported. The vendor advisory from Mozilla confirms the fix and recommends updating to Firefox 149.
Potential Impact
Successful exploitation of this vulnerability could result in denial-of-service conditions, causing Firefox to crash or hang when processing malicious XML content. This impacts availability but does not affect confidentiality or integrity. There are no reports of active exploitation in the wild.
Mitigation Recommendations
Mozilla has released an official fix for this vulnerability in Firefox 149. Users and administrators should update to Firefox 149 or later to remediate this issue. No additional mitigation steps are required once the update is applied.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mozilla
- Date Reserved
- 2026-03-23T23:22:51.463Z
- Cvss Version
- null
- State
- PUBLISHED
Threat ID: 69c2878af4197a8e3b320769
Added to database: 3/24/2026, 12:46:02 PM
Last enriched: 4/14/2026, 12:14:24 PM
Last updated: 5/8/2026, 10:32:51 PM
Views: 55
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