๐Ÿ›ก๏ธ CVE-2026-25521
๐ŸŸ  CVSS 8.8 โ€” High โš ๏ธ Exploit Public CWE-1321 NVD
8.8
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Locutus brings stdlibs of other programming languages to JavaScript for educational purposes. In versions from 2.0.12 to before 2.0.39, a prototype pollution vulnerability exists in locutus. Despite a previous fix that attempted to mitigate prototype pollution by checking whether user input contained a forbidden key, it is still possible to pollute Object.prototype via a crafted input using String.prototype. This issue has been patched in version 2.0.39.

Details

Severity HIGH
CVSS Score 8.8
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CWE CWE-1321
Public Exploit โš ๏ธ Yes
Source NVD
Published 2026-02-04
Updated 2026-06-15
Modified 2026-02-20

Affected Packages

Software From version Fixed in
locutus 2.0.12 2.0.39

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