Mozilla: >> Firefox >> 28.0 Security Vulnerabilities
Spoofing issue in the WebAuthn component in Firefox for Android. This vulnerability was fixed in Firefox 143 and Thunderbird 143.
CVSS Score
6.5
EPSS Score
0.001
Published
2025-09-16
Mitigation bypass in the Web Compatibility: Tooling component. This vulnerability was fixed in Firefox 143 and Thunderbird 143.
CVSS Score
5.4
EPSS Score
0.0
Published
2025-09-16
Malicious scripts could bypass the popup blocker to spam new tabs, potentially resulting in denial of service attacks. This vulnerability was fixed in Firefox for iOS 142.
CVSS Score
7.5
EPSS Score
0.001
Published
2025-08-19
Firefox for iOS would not respect a Content-Disposition header of type Attachment and would incorrectly display the content inline rather than downloading, potentially allowing for XSS attacks. This vulnerability was fixed in Firefox for iOS 142.
CVSS Score
6.1
EPSS Score
0.0
Published
2025-08-19
Malicious pages could use Firefox for iOS to pass FIDO: links to the OS and trigger the hybrid passkey transport. An attacker within Bluetooth range could have used this to trick the user into using their passkey to log the attacker's computer into the target account. This vulnerability was fixed in Firefox for iOS 142 and Focus for iOS 142.
CVSS Score
9.8
EPSS Score
0.001
Published
2025-08-19
Sandboxed iframes on webpages could potentially allow downloads to the device, bypassing the expected sandbox restrictions declared on the parent page. This vulnerability was fixed in Firefox for iOS 141.
CVSS Score
9.8
EPSS Score
0.001
Published
2025-08-19
The URL scheme used by Firefox to facilitate searching of text queries could incorrectly allow attackers to open arbitrary website URLs or internal pages if a user was tricked into clicking a link. This vulnerability was fixed in Firefox for iOS 141.
CVSS Score
5.4
EPSS Score
0.0
Published
2025-08-19
The QR scanner could allow arbitrary websites to be opened if a user was tricked into scanning a malicious link that leveraged Firefox's open-text URL scheme. This vulnerability was fixed in Firefox for iOS 141.
CVSS Score
9.1
EPSS Score
0.001
Published
2025-08-19
Malicious scripts utilizing repetitive JavaScript alerts could prevent client user interaction in some scenarios and allow for denial of service attacks. This vulnerability was fixed in Firefox for iOS 142.
CVSS Score
6.5
EPSS Score
0.001
Published
2025-08-19
If a user saved a response from the Network tab in Devtools using the Save As context menu option, that file may not have been saved with the `.download` file extension. This could have led to the user inadvertently running a malicious executable. This vulnerability was fixed in Firefox 140 and Thunderbird 140.
CVSS Score
8.1
EPSS Score
0.005
Published
2025-06-24