CVE-2025-5264
Mozilla Firefox vulnerability analysis and mitigation

Overview

CVE-2025-5264 is a moderate severity vulnerability discovered in Mozilla Firefox's "Copy as cURL" feature. The vulnerability was reported by Ameen Basha M K and disclosed on May 27, 2025. It affects Firefox < 139, Firefox ESR < 115.24, and Firefox ESR < 128.11. The vulnerability stems from insufficient escaping of newline characters in the "Copy as cURL" feature (Mozilla Advisory, NVD).

Technical details

The vulnerability is caused by insufficient escaping of the newline character in the "Copy as cURL" feature. The CVSS 3.1 base score is 4.8 (Medium) with the vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L. The vulnerability has been classified under CWE-77 (Improper Neutralization of Special Elements used in a Command Injection) (NVD).

Impact

If exploited, this vulnerability could lead to local code execution on the user's system. An attacker could craft malicious commands that, when copied and executed using the "Copy as cURL" feature, would execute unauthorized code on the user's machine (Mozilla Advisory, GBHackers).

Mitigation and workarounds

The vulnerability has been fixed in Firefox 139, Firefox ESR 115.24, and Firefox ESR 128.11. Users are strongly advised to update their browsers to these versions or later to protect against this vulnerability (Mozilla Advisory).

Additional resources


SourceThis report was generated using AI

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