anonhaven

CVE-2026-100793

MEDIUM CVSS 3.1: 6.5 EPSS 0.29%
Updated Oct 01, 2026
Firefox
Parameter Value
CVSS 6.5 (MEDIUM)
Type CWE-843 (Type Confusion)
Vendor Firefox
Public PoC No

JIT miscompilation in the JavaScript Engine component. This vulnerability was fixed in Thunderbird 157 and Firefox 157.

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
High
Complete data leak
Integrity
None
No data modification
Availability
None
No disruption

CVSS Vector v3.1

Weakness Type (CWE)

CWE-843 Type Confusion

References 3

https://bugzilla.mozilla.org/show_bug.cgi?id=2073268
security@mozilla.org
https://www.mozilla.org/security/advisories/mfsa2026-97/
security@mozilla.org
https://www.mozilla.org/security/advisories/mfsa2026-101/
security@mozilla.org
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