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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, and Firefox ESR < 115.23.1.

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 Vulnerable —
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 Vulnerable —
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, and Firefox ESR < 115.23.1.

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 Vulnerable —
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 Vulnerable —
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 Vulnerable —
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 Vulnerable —
Show all 9 packages Show less packages

CVE-2025-4091

Medium priority
Vulnerable

Memory safety bugs present in Firefox 137, Thunderbird 137, Firefox ESR 128.9, and Thunderbird 128.9. 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, mozjs102, mozjs115, mozjs38, mozjs52...

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
firefox Not affected Not affected Vulnerable —
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 Vulnerable —
Show all 9 packages Show less packages

CVE-2025-4090

Medium priority
Not affected

A vulnerability existed in Thunderbird for Android where potentially sensitive library locations were logged via Logcat. This vulnerability affects Firefox < 138 and Thunderbird < 138.

2 affected packages

firefox, thunderbird

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
firefox Not affected Not affected Not affected —
thunderbird Not affected Not affected Not affected —
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CVE-2025-4089

Medium priority
Vulnerable

Due to insufficient escaping of special characters 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 affects...

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 Vulnerable —
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 Vulnerable —
Show all 9 packages Show less packages

CVE-2025-4088

Medium priority
Vulnerable

A security vulnerability in Thunderbird allowed malicious sites to use redirects to send credentialed requests to arbitrary endpoints on any site that had invoked the Storage Access API. This enabled potential Cross-Site Request...

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 Vulnerable —
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 Vulnerable —
Show all 9 packages Show less packages

CVE-2025-4087

Medium priority
Vulnerable

A vulnerability was identified in Thunderbird where XPath parsing could trigger undefined behavior due to missing null checks during attribute access. This could lead to out-of-bounds read access and potentially, memory...

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 Vulnerable —
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 Vulnerable —
Show all 9 packages Show less packages

CVE-2025-4086

Medium priority
Not affected

A specially crafted filename containing a large number of encoded newline characters could obscure the file's extension when displayed in the download dialog. *This bug only affects Thunderbird for Android. Other versions...

2 affected packages

firefox, thunderbird

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
firefox Not affected Not affected Not affected —
thunderbird Not affected Not affected Not affected —
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CVE-2025-4085

Medium priority
Vulnerable

An attacker with control over a content process could potentially leverage the privileged UITour actor to leak sensitive information or escalate privileges. This vulnerability affects Firefox < 138 and Thunderbird < 138.

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 Vulnerable —
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 Vulnerable —
Show all 9 packages Show less packages
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