CVE-2026-18809
Received Received - Intake

Information Disclosure in Firefox for Android

Publication date: 2026-08-04

Last updated on: 2026-08-04

Assigner: Mozilla Corporation

Description
Information disclosure in Firefox for Android and Firefox Focus for Android. This vulnerability was fixed in Firefox 153.0.3.

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Meta Information

Published
2026-08-04
Last Modified
2026-08-04
Generated
2026-08-04
AI Q&A
2026-08-04
EPSS Evaluated
N/A
NVD
CVE-2026-18809
EUVD
EUVD-2026-52667

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
mozilla firefox 153.0.3

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-UNKNOWN

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Executive Summary

CVE-2026-18809 is an information disclosure vulnerability in Firefox for Android and Firefox Focus for Android. It was fixed in Firefox version 153.0.3. The vulnerability allows unauthorized access to sensitive data.

Detection Guidance

Detection requires checking the installed Firefox for Android version. If the version is below 153.0.3, the system is vulnerable. No specific commands are provided in the resources.

Impact Analysis

This vulnerability could allow attackers to access confidential information stored or transmitted by the affected browsers. Users of Firefox for Android or Firefox Focus for Android might have their data exposed if they do not update to version 153.0.3.

Mitigation Strategies

Update Firefox for Android to version 153.0.3 or later immediately. This can be done through the Google Play Store or Mozilla's official update channels.

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