CVE-2026-2801

HIGH
2026-02-24 [email protected]
7.5
CVSS 3.1
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CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

Lifecycle Timeline

3
Patch Released
Apr 10, 2026 - 14:30 nvd
Patch available
Analysis Generated
Mar 12, 2026 - 21:55 vuln.today
CVE Published
Feb 24, 2026 - 14:16 nvd
HIGH 7.5

Tags

Mozilla Information Disclosure Thunderbird Firefox Redhat Suse

Description

Incorrect boundary conditions in the JavaScript: WebAssembly component. This vulnerability affects Firefox < 148 and Thunderbird < 148.

Analysis

Improper boundary condition handling in the JavaScript/WebAssembly engine of Firefox and Thunderbird before version 148 enables remote denial of service attacks without requiring user interaction or privileges. An attacker can crash affected applications or cause service unavailability by sending specially crafted content. …

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Remediation

Within 24 hours: Identify and inventory all Firefox < 148 and Thunderbird < 148 installations across the organization. Within 7 days: Implement usage restrictions for vulnerable versions in high-risk departments; consider temporary blocking via endpoint protection or network controls. …

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Priority Score

38
Low Medium High Critical
KEV: 0
EPSS: +0.1
CVSS: +38
POC: 0

Vendor Status

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CVE-2026-2801 vulnerability details – vuln.today
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