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CVE-2025-5267

Medium priority
Vulnerable

A clickjacking vulnerability could have been used to trick a user into leaking saved payment card details to a malicious page. This vulnerability affects Firefox < 139, Firefox ESR < 128.11, Thunderbird < 139, and Thunderbird < 128.11.

9 affected packages

firefox, mozjs102, mozjs115, mozjs38, mozjs52...

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
firefox Not affected Not affected Not in release
mozjs102 Ignored Ignored Not in release
mozjs115 Ignored Not in release Not in release
mozjs38 Not in release 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 Not in release
mozjs91 Not in release Ignored Not in release
thunderbird Not affected Vulnerable Not in release
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CVE-2025-5266

Medium priority
Vulnerable

Script elements loading cross-origin resources generated load and error events which leaked information enabling XS-Leaks attacks. This vulnerability affects Firefox < 139, Firefox ESR < 128.11, Thunderbird < 139, and Thunderbird < 128.11.

9 affected packages

firefox, mozjs102, mozjs115, mozjs38, mozjs52...

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
firefox Not affected Not affected Not in release
mozjs102 Ignored Ignored Not in release
mozjs115 Ignored Not in release Not in release
mozjs38 Not in release 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 Not in release
mozjs91 Not in release Ignored Not in release
thunderbird Not affected Vulnerable Not in release
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CVE-2025-5265

Medium priority
Vulnerable

Due to insufficient escaping of the ampersand character in the “Copy as cURL” feature, an attacker could trick a user into using this command, potentially leading to local code execution on the user's system. *This bug only...

9 affected packages

firefox, mozjs102, mozjs115, mozjs38, mozjs52...

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
firefox Not affected Not affected Not in release
mozjs102 Ignored Ignored Not in release
mozjs115 Ignored Not in release Not in release
mozjs38 Not in release 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 Not in release
mozjs91 Not in release Ignored Not in release
thunderbird Not affected Vulnerable Not in release
Show all 9 packages Show less packages

CVE-2025-5264

Medium priority
Vulnerable

Due to insufficient escaping of the newline character in the “Copy as cURL” feature, an attacker could trick a user into using this command, potentially leading to local code execution on the user's system. This vulnerability...

9 affected packages

firefox, mozjs102, mozjs115, mozjs38, mozjs52...

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
firefox Not affected Not affected Not in release
mozjs102 Ignored Ignored Not in release
mozjs115 Ignored Not in release Not in release
mozjs38 Not in release 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 Not in release
mozjs91 Not in release Ignored Not in release
thunderbird Not affected Vulnerable Not in release
Show all 9 packages Show less packages

CVE-2025-5263

Medium priority
Vulnerable

Error handling for script execution was incorrectly isolated from web content, which could have allowed cross-origin leak attacks. This vulnerability affects Firefox < 139, Firefox ESR < 115.24, Firefox ESR < 128.11, Thunderbird <...

9 affected packages

firefox, mozjs102, mozjs115, mozjs38, mozjs52...

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
firefox Not affected Not affected Not in release
mozjs102 Ignored Ignored Not in release
mozjs115 Ignored Not in release Not in release
mozjs38 Not in release 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 Not in release
mozjs91 Not in release Ignored Not in release
thunderbird Not affected Vulnerable Not in release
Show all 9 packages Show less packages

CVE-2025-5262

Medium priority
Ignored

Rejected reason: This CVE was accidentally assigned by Mozilla but should be assigned by another CNA. When the correct CVE is available, Mozilla's advisories will be updated to reflect that identifier.

9 affected packages

firefox, mozjs102, mozjs115, mozjs38, mozjs52...

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
firefox Not affected Not affected Not in release
mozjs102 Ignored Ignored Not in release
mozjs115 Ignored Not in release Not in release
mozjs38 Not in release Not in release Not in release Not affected
mozjs52 Not in release Not in release Ignored Ignored
mozjs68 Not in release Not in release Ignored
mozjs78 Not in release Ignored Not in release
mozjs91 Not in release Ignored Not in release
thunderbird Not affected Not affected Not in release
Show all 9 packages Show less packages

CVE-2025-5020

Medium priority
Vulnerable

Opening maliciously-crafted URLs in Firefox from other apps such as Safari could have allowed attackers to spoof website addresses if the URLs utilized non-HTTP schemes used internally by the Firefox iOS client This vulnerability...

9 affected packages

firefox, mozjs102, mozjs115, mozjs38, mozjs52...

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
firefox Not affected Not affected Not in release
mozjs102 Ignored Ignored Not in release
mozjs115 Ignored Not in release Not in release
mozjs38 Not in release Not in release Not in release Needs evaluation
mozjs52 Not in release Not in release Needs evaluation Ignored
mozjs68 Not in release Not in release Ignored
mozjs78 Not in release Ignored Not in release
mozjs91 Not in release Ignored Not in release
thunderbird Not affected Vulnerable Not in release
Show all 9 packages Show less packages

CVE-2025-4919

Medium priority
Vulnerable

An attacker was able to perform an out-of-bounds read or write on a JavaScript object by confusing array index sizes. This vulnerability affects Firefox < 138.0.4, Firefox ESR < 128.10.1, Firefox ESR < 115.23.1, Thunderbird <...

9 affected packages

firefox, mozjs102, mozjs115, mozjs38, mozjs52...

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
firefox Not affected Not affected Not in release
mozjs102 Ignored Ignored Not in release
mozjs115 Ignored Not in release Not in release
mozjs38 Not in release Not in release Not in release Needs evaluation
mozjs52 Not in release Not in release Needs evaluation Ignored
mozjs68 Not in release Not in release Ignored
mozjs78 Not in release Ignored Not in release
mozjs91 Not in release Ignored Not in release
thunderbird Not affected Vulnerable Not in release
Show all 9 packages Show less packages

CVE-2025-4918

Medium priority
Vulnerable

An attacker was able to perform an out-of-bounds read or write on a JavaScript `Promise` object. This vulnerability affects Firefox < 138.0.4, Firefox ESR < 128.10.1, Firefox ESR < 115.23.1, Thunderbird < 128.10.2, and Thunderbird...

9 affected packages

firefox, mozjs102, mozjs115, mozjs38, mozjs52...

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
firefox Not affected Not affected Not in release
mozjs102 Ignored Ignored Not in release
mozjs115 Ignored Not in release Not in release
mozjs38 Not in release Not in release Not in release Needs evaluation
mozjs52 Not in release Not in release Needs evaluation Ignored
mozjs68 Not in release Not in release Ignored
mozjs78 Not in release Ignored Not in release
mozjs91 Not in release Ignored Not in release
thunderbird Not affected Vulnerable Not in release
Show all 9 packages Show less packages

CVE-2025-4092

Medium priority
Vulnerable

Memory safety bugs present in Firefox 137 and Thunderbird 137. 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. This...

9 affected packages

firefox, mozjs102, mozjs115, mozjs38, mozjs52...

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
firefox Not affected Not affected Not in release
mozjs102 Ignored Ignored Not in release
mozjs115 Ignored Not in release Not in release
mozjs38 Not in release Not in release Not in release Needs evaluation
mozjs52 Not in release Not in release Needs evaluation Ignored
mozjs68 Not in release Not in release Ignored
mozjs78 Not in release Ignored Not in release
mozjs91 Not in release Ignored Not in release
thunderbird Not affected Vulnerable Not in release
Show all 9 packages Show less packages