CVE-2026-16397: Vulnerability in Mozilla Firefox
Clickjacking issue in the WebExtensions component in Firefox for Android. This vulnerability was fixed in Firefox 153.
AI Analysis
Technical Summary
CVE-2026-16397 describes a clickjacking vulnerability affecting the WebExtensions component in Firefox for Android. The flaw could enable attackers to manipulate user interactions by overlaying or hiding UI elements, thereby causing users to perform actions unknowingly. Mozilla fixed this vulnerability in Firefox 153 as part of a security update announced in their advisory MFSA 2026-68.
Potential Impact
Successful exploitation of this vulnerability could allow an attacker to deceive users into interacting with hidden or disguised interface elements within Firefox for Android extensions, potentially leading to unauthorized actions or privilege escalations within the browser context. The vendor rates the impact as moderate.
Mitigation Recommendations
Mozilla fixed this vulnerability in Firefox 153. Users and administrators should update Firefox for Android to version 153 or later to remediate this issue. No additional mitigation steps are indicated in the vendor advisory.
CVE-2026-16397: Vulnerability in Mozilla Firefox
Description
Clickjacking issue in the WebExtensions component in Firefox for Android. This vulnerability was fixed in Firefox 153.
CVSS v3.1
Score 6.5medium
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-16397 describes a clickjacking vulnerability affecting the WebExtensions component in Firefox for Android. The flaw could enable attackers to manipulate user interactions by overlaying or hiding UI elements, thereby causing users to perform actions unknowingly. Mozilla fixed this vulnerability in Firefox 153 as part of a security update announced in their advisory MFSA 2026-68.
Potential Impact
Successful exploitation of this vulnerability could allow an attacker to deceive users into interacting with hidden or disguised interface elements within Firefox for Android extensions, potentially leading to unauthorized actions or privilege escalations within the browser context. The vendor rates the impact as moderate.
Mitigation Recommendations
Mozilla fixed this vulnerability in Firefox 153. Users and administrators should update Firefox for Android to version 153 or later to remediate this issue. No additional mitigation steps are indicated in the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mozilla
- Date Reserved
- 2026-07-20T21:57:25.987Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
- Vendor Advisory Urls
- [{"url":"https://www.mozilla.org/security/advisories/mfsa2026-68/","vendor":"Mozilla"}]
Threat ID: 6a5f6cc12a4a8d598926292c
Added to database: 07/21/2026, 12:57:37 UTC
Last enriched: 07/21/2026, 13:14:32 UTC
Last updated: 07/21/2026, 21:32:32 UTC
Views: 7
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