CVE Catalog

CVE-2026-92039

MediumCVSS 6.3
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.22%

12th percentile - higher than 12% of all known CVEs

Summary

Mitigation bypass vulnerability in the DOM: Notifications component of Firefox and Thunderbird. The flaw was fixed in Firefox 156, Firefox ESR 153.3, Thunderbird 156, and Thunderbird 153.3.

Risk Assessment

Bypassing security controls in the DOM notifications mechanism may allow an attacker to display fake notifications or trick users into unsafe actions. This can be exploited in phishing and social engineering attacks.

Recommendation

Update Firefox to version 156 or ESR 153.3, and Thunderbird to version 156 or 153.3. Inform users about the risks of fake browser notifications.

Related vulnerabilities

Original NVD description (English source)

Mitigation bypass in the DOM: Notifications component. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, Thunderbird 156, and Thunderbird 153.3.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS