Mozilla: >> Firefox >> 0.9.1 Security Vulnerabilities
Undefined behavior in the Audio/Video component. This vulnerability was fixed in Firefox 149 and Thunderbird 149.
CVSS Score
9.1
EPSS Score
0.0
Published
2026-03-24
Spoofing issue in the Privacy: Anti-Tracking component. This vulnerability was fixed in Firefox 149 and Thunderbird 149.
CVSS Score
6.5
EPSS Score
0.0
Published
2026-03-24
Undefined behavior in the WebRTC: Signaling component. This vulnerability was fixed in Firefox 149, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9.
CVSS Score
8.1
EPSS Score
0.0
Published
2026-03-24
When switching between Android apps using the card carousel Firefox shows a black screen as its card image when a password-related screen was the last one being used. Prior to Firefox 144 the password edit screen was visible. This vulnerability was fixed in Firefox 144.
CVSS Score
9.1
EPSS Score
0.0
Published
2025-10-14
When the address bar was hidden due to scrolling on Android, a malicious page could create a fake address bar to fool the user in response to a visibilitychange event. This vulnerability was fixed in Firefox 144.
CVSS Score
6.5
EPSS Score
0.0
Published
2025-10-14
The Firefox and Firefox Focus UI for the Android custom tab feature only showed the "site" that was loaded, not the full hostname. User supplied content hosted on a subdomain of a site could have been used to fool a user into thinking it was content from a different subdomain of that site. This vulnerability was fixed in Firefox 144.
CVSS Score
8.1
EPSS Score
0.0
Published
2025-10-14
Links in a sandboxed iframe could open an external app on Android without the required "allow-" permission. This vulnerability was fixed in Firefox 144 and Thunderbird 144.
CVSS Score
6.5
EPSS Score
0.0
Published
2025-10-14
Sandbox escape due to integer overflow in the Graphics: Canvas2D component. This vulnerability was fixed in Firefox 143.0.3.
CVSS Score
8.6
EPSS Score
0.001
Published
2025-09-30
JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 143.0.3.
CVSS Score
7.5
EPSS Score
0.0
Published
2025-09-30
Spoofing issue in the Site Permissions component. This vulnerability was fixed in Firefox 143 and Thunderbird 143.
CVSS Score
8.1
EPSS Score
0.0
Published
2025-09-16
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