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CVE-2026-4726
HIGH7.5
Description
Denial-of-service in the XML component. This vulnerability was fixed in Firefox 149 and Thunderbird 149.
CVE Details
CVSS v3.1 Score7.5
SeverityHIGH
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack VectorNETWORK
ComplexityLOW
Privileges RequiredNONE
User InteractionNONE
Published3/24/2026
Last Modified4/13/2026
Sourcenvd
Honeypot Sightings0
Affected Products
mozilla:firefoxmozilla:thunderbird
Weaknesses (CWE)
CWE-400
References
https://bugzilla.mozilla.org/show_bug.cgi?id=1955311(security@mozilla.org)
https://www.mozilla.org/security/advisories/mfsa2026-20/(security@mozilla.org)
https://www.mozilla.org/security/advisories/mfsa2026-23/(security@mozilla.org)
IOC Correlations
No correlations recorded
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