CVE-2026-74978
Undergoing Analysis Undergoing Analysis - In Progress

Clickjacking in Firefox Widget Component

Publication date: 2026-08-18

Last updated on: 2026-08-18

Assigner: Mozilla Corporation

Description
Clickjacking issue in the Widget component. This vulnerability was fixed in Firefox 154 and Firefox ESR 153.1.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published
2026-08-18
Last Modified
2026-08-18
Generated
2026-08-18
AI Q&A
2026-08-18
EPSS Evaluated
N/A
NVD
CVE-2026-74978
EUVD
EUVD-2026-60691

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
mozilla firefox to 154 (inc)
mozilla firefox_esr to 153.1 (inc)

Helpful Resources

Exploitability

CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-UNKNOWN

Attack-Flow Graph

AI Quick Actions

Instant insights powered by AI
Executive Summary

This is a clickjacking vulnerability in Firefox's Widget component. Clickjacking occurs when an attacker tricks a user into clicking something different from what the user perceives, potentially allowing unauthorized actions.

Detection Guidance

Detection involves checking Firefox and Firefox ESR versions. Run 'firefox --version' or 'firefox-esr --version' to verify if versions are below 154 or 153.1 respectively.

Impact Analysis

An attacker could exploit this to trick you into clicking UI elements without your knowledge, leading to unintended actions like enabling camera access, downloading malware, or changing settings.

Mitigation Strategies

Update Firefox to version 154 or Firefox ESR to version 153.1 or later immediately to patch the clickjacking vulnerability.

Chat Assistant

Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-74978. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70

EPSS Chart