CVE-2026-117963
Received Received - Intake

DOM Boundary Condition Issue in Firefox Service Workers

Publication date: 2026-10-27

Last updated on: 2026-10-27

Assigner: Mozilla Corporation

Description
Incorrect boundary conditions in the DOM: Service Workers component. This vulnerability was fixed in Firefox 159 and Firefox ESR 153.6.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published
2026-10-27
Last Modified
2026-10-27
Generated
2026-10-27
AI Q&A
2026-10-27
EPSS Evaluated
N/A
NVD
CVE-2026-117963
EUVD
EUVD-2026-110994

Affected Vendors & Products

Currently, no data is known.

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 involves incorrect boundary conditions in the DOM: Service Workers component of Firefox. It was addressed in Firefox 159 and Firefox ESR 153.6.

Impact Analysis

An attacker could exploit this flaw to cause unexpected behavior or crashes in the browser, potentially leading to denial of service or unauthorized access to sensitive data.

Mitigation Strategies

Update Firefox to version 159 or later and Firefox ESR to version 153.6 or later to address the vulnerability.

Chat Assistant

Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-117963. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70

EPSS Chart