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CVE-2026-2802

MEDIUM CVSS 3.1: 4.2 EPSS 0.03%
Updated Feb 25, 2026
Mozilla
Parameter Value
CVSS 4.2 (MEDIUM)
Affected Versions before 148.0
Fixed In 148.0
Type CWE-362 (Race Condition)
Vendor Mozilla
Public PoC No

Race condition in the JavaScript: GC component. This vulnerability affects Firefox < 148 and Thunderbird < 148.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
High
Difficult 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)

Vulnerable Products 2

Configuration From (including) Up to (excluding)
Mozilla Firefox
cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*
148.0
Mozilla Thunderbird
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:-:*:*:*
148.0