Clickjacking Vulnerability in Firefox Widget: Gtk Component
CVE-2026-12322

5.4MEDIUM

Key Information:

Vendor

Mozilla
Status
Firefox
Thunderbird
Vendor
CVE Published:
16 June 2026

What is CVE-2026-12322?

A clickjacking vulnerability exists in the Gtk component of the Firefox browser, which could potentially be exploited by attackers to trick users into clicking on fraudulent content. This manipulation may lead to unauthorized actions being carried out on behalf of the user without their knowledge. Mozilla has implemented a fix for this issue in version 152 of Firefox, ensuring enhanced protection against such malicious attacks.

Affected Version(s)

Firefox 152

Thunderbird 152

References

https://bugzilla.mozilla.org/show_bug.cgi?id=2033848
https://www.mozilla.org/security/advisories/mfsa2026-57/
https://www.mozilla.org/security/advisories/mfsa2026-60/

CVSS V3.1

Score:
5.4
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Jivk
.