What’s Vulnerable › Vulnerabilities

CVE-2025-11713: Potential user-assisted code execution in “Copy as cURL” command

• Severity: high (CVSS 8.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-10-14 · updated 2026-10-23
• Weakness: CWE-116

Description

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 the application when running on other operating systems. This vulnerability was fixed in Firefox 144, Firefox ESR 140.4, Thunderbird 144, and Thunderbird 140.4.

Affected products

• Mozilla Firefox: before 140.4.0; before 144.0 — fixed in 140.4.0, 144.0
• Mozilla Thunderbird: before 140.4.0; from 141.0 before 144.0 — fixed in 140.4.0, 144.0

How to fix

Upgrade to a fixed version: Mozilla Firefox 140.4.0, 144.0; Mozilla Thunderbird 140.4.0, 144.0. Check the vendor advisory for mitigations.

References

• https://bugzilla.mozilla.org/show_bug.cgi?id=1986142
• https://www.mozilla.org/security/advisories/mfsa2025-81/
• https://www.mozilla.org/security/advisories/mfsa2025-83/
• https://www.mozilla.org/security/advisories/mfsa2025-84/
• https://www.mozilla.org/security/advisories/mfsa2025-85/

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