CVE-2025-5264

Medium

Description

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 was fixed in Firefox 139, Firefox ESR 115.24, Firefox ESR 128.11, Thunderbird 139, and Thunderbird 128.11.

SeverityMedium
CVSS4.8
Exploit probability—
ProductMozilla Firefox
PublishedMay 27, 2025
First seenMay 27, 2025

How to fix

Update
  • mozilla firefox115.24.0, 139.0, 128.11.0 or later

Affected products

ProductAffected versionsFixed in
mozilla firefoxv < 115.24.0, v < 139.0, 116.0 ≤ v < 128.11.0115.24.0, 139.0, 128.11.0

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