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CVE-2025-4089

Medium

Description

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.

SeverityMedium
CVSS5.1
Exploit probability—
ProductMozilla Firefox
PublishedApr 29, 2025
First seenApr 29, 2025
Weakness typeCWE-77Command injection

How to fix

Update
  • mozilla firefox138.0 or later
  • mozilla thunderbird138.0 or later

Affected products

ProductAffected versionsFixed in
mozilla firefoxv < 138.0138.0
mozilla thunderbirdv < 138.0138.0

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