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CVE-2025-11721

Medium priority

Needs evaluation

Memory safety bug present in Firefox 143 and Thunderbird 143. This bug showed evidence of memory corruption and we presume that with enough effort this could have been exploited to run arbitrary code. This vulnerability affects...

9 affected packages

firefox, thunderbird, mozjs38, mozjs52, mozjs68...

Package	24.04 LTS	22.04 LTS	20.04 LTS	18.04 LTS
firefox	Not affected	Not affected	—	—
thunderbird	Not affected	Not affected	—	—
mozjs38	Not in release	Not in release	—	Needs evaluation
mozjs52	Not in release	Not in release	Ignored	Ignored
mozjs68	Not in release	Not in release	Ignored	—
mozjs78	Not in release	Ignored	—	—
mozjs91	Not in release	Ignored	—	—
mozjs102	Ignored	Ignored	—	—
mozjs115	Ignored	Not in release	—	—

CVE-2025-11720

Medium priority

Needs evaluation

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...

9 affected packages

firefox, thunderbird, mozjs38, mozjs52, mozjs68...

Package	24.04 LTS	22.04 LTS	20.04 LTS	18.04 LTS
firefox	Not affected	Not affected	—	—
thunderbird	Not affected	Not affected	—	—
mozjs38	Not in release	Not in release	—	Needs evaluation
mozjs52	Not in release	Not in release	Ignored	Ignored
mozjs68	Not in release	Not in release	Ignored	—
mozjs78	Not in release	Ignored	—	—
mozjs91	Not in release	Ignored	—	—
mozjs102	Ignored	Ignored	—	—
mozjs115	Ignored	Not in release	—	—

CVE-2025-11719

Medium priority

Needs evaluation

Starting in Firefox 143, the use of the native messaging API by web extensions on Windows could lead to crashes caused by use-after-free memory corruption. This vulnerability affects Firefox < 144 and Thunderbird < 144.

9 affected packages

firefox, thunderbird, mozjs38, mozjs52, mozjs68...

Package	24.04 LTS	22.04 LTS	20.04 LTS	18.04 LTS
firefox	Not affected	Not affected	—	—
thunderbird	Not affected	Not affected	—	—
mozjs38	Not in release	Not in release	—	Needs evaluation
mozjs52	Not in release	Not in release	Ignored	Ignored
mozjs68	Not in release	Not in release	Ignored	—
mozjs78	Not in release	Ignored	—	—
mozjs91	Not in release	Ignored	—	—
mozjs102	Ignored	Ignored	—	—
mozjs115	Ignored	Not in release	—	—

CVE-2025-11718

Medium priority

Needs evaluation

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 affects Firefox < 144.

9 affected packages

firefox, thunderbird, mozjs38, mozjs52, mozjs68...

Package	24.04 LTS	22.04 LTS	20.04 LTS	18.04 LTS
firefox	Not affected	Not affected	—	—
thunderbird	Not affected	Not affected	—	—
mozjs38	Not in release	Not in release	—	Needs evaluation
mozjs52	Not in release	Not in release	Ignored	Ignored
mozjs68	Not in release	Not in release	Ignored	—
mozjs78	Not in release	Ignored	—	—
mozjs91	Not in release	Ignored	—	—
mozjs102	Ignored	Ignored	—	—
mozjs115	Ignored	Not in release	—	—

CVE-2025-11717

Medium priority

Needs evaluation

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...

9 affected packages

firefox, thunderbird, mozjs38, mozjs52, mozjs68...

Package	24.04 LTS	22.04 LTS	20.04 LTS	18.04 LTS
firefox	Not affected	Not affected	—	—
thunderbird	Not affected	Not affected	—	—
mozjs38	Not in release	Not in release	—	Needs evaluation
mozjs52	Not in release	Not in release	Ignored	Ignored
mozjs68	Not in release	Not in release	Ignored	—
mozjs78	Not in release	Ignored	—	—
mozjs91	Not in release	Ignored	—	—
mozjs102	Ignored	Ignored	—	—
mozjs115	Ignored	Not in release	—	—

CVE-2025-11716

Medium priority

Needs evaluation

Links in a sandboxed iframe could open an external app on Android without the required “allow-” permission. This vulnerability affects Firefox < 144 and Thunderbird < 144.

9 affected packages

firefox, thunderbird, mozjs38, mozjs52, mozjs68...

Package	24.04 LTS	22.04 LTS	20.04 LTS	18.04 LTS
firefox	Not affected	Not affected	—	—
thunderbird	Not affected	Not affected	—	—
mozjs38	Not in release	Not in release	—	Needs evaluation
mozjs52	Not in release	Not in release	Ignored	Ignored
mozjs68	Not in release	Not in release	Ignored	—
mozjs78	Not in release	Ignored	—	—
mozjs91	Not in release	Ignored	—	—
mozjs102	Ignored	Ignored	—	—
mozjs115	Ignored	Not in release	—	—

CVE-2025-11715

Medium priority

Vulnerable

Memory safety bugs present in Firefox ESR 140.3, Thunderbird ESR 140.3, Firefox 143 and Thunderbird 143. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been...

9 affected packages

firefox, thunderbird, mozjs38, mozjs52, mozjs68...

Package	24.04 LTS	22.04 LTS	20.04 LTS	18.04 LTS
firefox	Not affected	Not affected	—	—
thunderbird	Not affected	Vulnerable	—	—
mozjs38	Not in release	Not in release	—	Needs evaluation
mozjs52	Not in release	Not in release	Ignored	Ignored
mozjs68	Not in release	Not in release	Ignored	—
mozjs78	Not in release	Ignored	—	—
mozjs91	Not in release	Ignored	—	—
mozjs102	Ignored	Ignored	—	—
mozjs115	Ignored	Not in release	—	—

CVE-2025-11714

Medium priority

Vulnerable

Memory safety bugs present in Firefox ESR 115.28, Firefox ESR 140.3, Thunderbird ESR 140.3, Firefox 143 and Thunderbird 143. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of...

9 affected packages

firefox, thunderbird, mozjs38, mozjs52, mozjs68...

Package	24.04 LTS	22.04 LTS	20.04 LTS	18.04 LTS
firefox	Not affected	Not affected	—	—
thunderbird	Not affected	Vulnerable	—	—
mozjs38	Not in release	Not in release	—	Needs evaluation
mozjs52	Not in release	Not in release	Ignored	Ignored
mozjs68	Not in release	Not in release	Ignored	—
mozjs78	Not in release	Ignored	—	—
mozjs91	Not in release	Ignored	—	—
mozjs102	Ignored	Ignored	—	—
mozjs115	Ignored	Not in release	—	—

CVE-2025-11713

Medium priority

Vulnerable

Insufficient escaping in the “Copy as cURL” feature could have been used to trick a user into executing unexpected code on Windows. This did not affect Firefox running on other operating systems. This vulnerability affects Firefox...

9 affected packages

firefox, thunderbird, mozjs38, mozjs52, mozjs68...

Package	24.04 LTS	22.04 LTS	20.04 LTS	18.04 LTS
firefox	Not affected	Not affected	—	—
thunderbird	Not affected	Vulnerable	—	—
mozjs38	Not in release	Not in release	—	Needs evaluation
mozjs52	Not in release	Not in release	Ignored	Ignored
mozjs68	Not in release	Not in release	Ignored	—
mozjs78	Not in release	Ignored	—	—
mozjs91	Not in release	Ignored	—	—
mozjs102	Ignored	Ignored	—	—
mozjs115	Ignored	Not in release	—	—

CVE-2025-11712

Medium priority

Vulnerable

A malicious page could have used the type attribute of an OBJECT tag to override the default browser behavior when encountering a web resource served without a content-type. This could have contributed to an XSS on a site that...

9 affected packages

firefox, thunderbird, mozjs38, mozjs52, mozjs68...

Package	24.04 LTS	22.04 LTS	20.04 LTS	18.04 LTS
firefox	Not affected	Not affected	—	—
thunderbird	Not affected	Vulnerable	—	—
mozjs38	Not in release	Not in release	—	Needs evaluation
mozjs52	Not in release	Not in release	Ignored	Ignored
mozjs68	Not in release	Not in release	Ignored	—
mozjs78	Not in release	Ignored	—	—
mozjs91	Not in release	Ignored	—	—
mozjs102	Ignored	Ignored	—	—
mozjs115	Ignored	Not in release	—	—

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