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| purl | pkg:deb/debian/firefox@140.0-1?distro=sid |
| Vulnerability | Summary | Fixed by |
|---|---|---|
| This package is not known to be affected by vulnerabilities. | ||
| Vulnerability | Summary | Aliases |
|---|---|---|
| VCID-4hcr-7re3-rkhx | An attacker was able to bypass the connect-src directive of a Content Security Policy by manipulating subdocuments. This would have also hidden the connections from the Network tab in Devtools. |
CVE-2025-6427
|
| VCID-82f1-zb9f-qbg8 | 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. |
CVE-2025-6435
|
| VCID-b8xy-bqk8-dyf5 | Memory safety bugs present in Firefox 139 and Thunderbird 139. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. |
CVE-2025-6436
|
| VCID-ewxs-dh9a-mugn | When Multi-Account Containers was enabled, DNS requests could have bypassed a SOCKS proxy when the domain name was invalid or the SOCKS proxy was not responding. |
CVE-2025-6432
|
| VCID-j6w1-yhc3-uqfw | An attacker who enumerated resources from the WebCompat extension could have obtained a persistent UUID that identified the browser, and persisted between containers and normal/private browsing mode, but not profiles. |
CVE-2025-6425
|
| VCID-mrb2-hz9y-4ufp | When a file download is specified via the Content-Disposition header, that directive would be ignored if the file was included via a <embed> or <object> tag, potentially making a website vulnerable to a cross-site scripting attack. |
CVE-2025-6430
|
| VCID-r29z-4m4j-8kft | A use-after-free in FontFaceSet resulted in a potentially exploitable crash. |
CVE-2025-6424
|
| VCID-s89g-7f5f-5qd2 | Thunderbird could have incorrectly parsed a URL and rewritten it to the youtube.com domain when parsing the URL specified in an embed tag. This could have bypassed website security checks that restricted which domains users were allowed to embed. |
CVE-2025-6429
|
| VCID-t1h3-cabw-cyc2 | The exception page for the HTTPS-Only feature, displayed when a website is opened via HTTP, lacked an anti-clickjacking delay, potentially allowing an attacker to trick a user into granting an exception and loading a webpage over HTTP. |
CVE-2025-6434
|
| VCID-zv75-mvuu-fka9 | If a user visited a webpage with an invalid TLS certificate, and granted an exception, the webpage was able to provide a WebAuthn challenge that the user would be prompted to complete. This is in violation of the WebAuthN spec which requires "a secure transport established without errors". |
CVE-2025-6433
|