What’s Vulnerable › Vulnerabilities

CVE-2026-16397: Clickjacking issue in the WebExtensions component in Firefox for Android

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-07-21 · updated 2026-10-24
• Weakness: CWE-1021

Description

Clickjacking issue in the WebExtensions component in Firefox for Android. This vulnerability was fixed in Firefox 153.

Affected products

• Mozilla Firefox: before 153.0.0 — fixed in 153.0.0

How to fix

Upgrade to a fixed version: Mozilla Firefox 153.0.0. Check the vendor advisory for mitigations.

References

• https://bugzilla.mozilla.org/show_bug.cgi?id=2047608
• https://www.mozilla.org/security/advisories/mfsa2026-68/

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