CVE-2026-2784
Received Received - Intake

Mitigation Bypass in Firefox DOM Security Component

Publication date: 2026-02-24

Last updated on: 2026-04-13

Assigner: Mozilla Corporation

Description
Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 148, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published
2026-02-24
Last Modified
2026-04-13
Generated
2026-07-06
AI Q&A
2026-02-24
EPSS Evaluated
2026-07-05
NVD
CVE-2026-2784

Affected Vendors & Products

Showing 4 associated CPEs
Vendor Product Version / Range
mozilla firefox to 148.0 (exc)
mozilla thunderbird to 148.0 (exc)
mozilla thunderbird to 140.8.0 (exc)
mozilla firefox to 140.8.0 (exc)

Helpful Resources

Exploitability

CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-288 The product requires authentication, but the product has an alternate path or channel that does not require authentication.

Attack-Flow Graph

AI Quick Actions

Instant insights powered by AI
Executive Summary

This vulnerability is a mitigation bypass in the DOM (Document Object Model) security component affecting Mozilla Firefox versions before 148 and Firefox ESR versions before 140.8.

Impact Analysis

I don't know

Compliance Impact

I don't know

Detection Guidance

I don't know

Mitigation Strategies

I don't know

Chat Assistant

Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-2784. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70

EPSS Chart