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CVE-2026-100795

MEDIUM CVSS 3.1: 6.5 EPSS 0.28%
Updated Sep 30, 2026
Firefox
Parameter Value
CVSS 6.5 (MEDIUM)
Type CWE-770 (Allocation Without Limits)
Vendor Firefox
Public PoC No

Denial-of-service in the Networking 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
None
No data leak
Integrity
None
No data modification
Availability
High
Complete denial of service

CVSS Vector v3.1

Weakness Type (CWE)

CWE-770 Allocation Without Limits

References 3

https://bugzilla.mozilla.org/show_bug.cgi?id=2048871
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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