CVE-2026-109772
Received Received - Intake

Same-origin policy bypass in Firefox DevTools

Publication date: 2026-10-13

Last updated on: 2026-10-13

Assigner: Mozilla Corporation

Description
Same-origin policy bypass in the DevTools component. This vulnerability was fixed in Firefox 158.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published
2026-10-13
Last Modified
2026-10-13
Generated
2026-10-13
AI Q&A
2026-10-13
EPSS Evaluated
N/A
NVD
CVE-2026-109772
EUVD
EUVD-2026-98532

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
mozilla firefox 158

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 vulnerability is a same-origin policy bypass in Firefox's DevTools component. The same-origin policy is a security feature that prevents scripts from one website from accessing data from another website. A bypass means an attacker could potentially access sensitive data across different origins.

Impact Analysis

If exploited, this vulnerability could allow an attacker to access sensitive information from other websites while you are using Firefox DevTools. This might lead to data theft, session hijacking, or unauthorized actions on your behalf.

Compliance Impact

This vulnerability could lead to unauthorized access to personal data, which may violate GDPR's data protection requirements. For HIPAA, it might expose protected health information, risking compliance with patient privacy rules.

Mitigation Strategies

Update Firefox to version 158 or later to address the same-origin policy bypass in the DevTools component.

Chat Assistant

Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-109772. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70

EPSS Chart