Use-after-free in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 158, Firefox ESR 153.5, Thunderbird 158, and Thunderbird 153.5.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
Required
User action required
Impact Assessment
Confidentiality
Low
Partial data leak
Integrity
Low
Partial data modification
Availability
None
No disruption
CVSS Vector v3.1
Weakness Type (CWE)
References 5
https://bugzilla.mozilla.org/show_bug.cgi?id=2074193
security@mozilla.org
https://www.mozilla.org/security/advisories/mfsa2026-106/
security@mozilla.org
https://www.mozilla.org/security/advisories/mfsa2026-108/
security@mozilla.org
https://www.mozilla.org/security/advisories/mfsa2026-109/
security@mozilla.org
https://www.mozilla.org/security/advisories/mfsa2026-110/
security@mozilla.org