CVE-2025-4089

Summary

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 was fixed in Firefox 138 and Thunderbird 138.

Impact & exploitability

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Affected products we track (1)

Recommendation

Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.

Additional information

• NVD record
• https://www.mozilla.org/security/advisories/mfsa2025-28/Advisory
• https://www.mozilla.org/security/advisories/mfsa2025-31/Advisory
• https://bugzilla.mozilla.org/buglist.cgi?bug_id=1949994%2C1956698%2C1960198