CVE-2025-55132: Node.js

Medium severity, CVSS 5.3. EPSS: 0.3% chance of exploitation in the next 30 days.

A flaw in Node.js's permission model allows a file's access and modification timestamps to be changed via `futimes()` even when the process has only read permissions. Unlike `utimes()`, `futimes()` does not apply the expected write-permission checks, which means file metadata can be modified in read-only directories. This behavior could be used to alter timestamps in ways that obscure activity, reducing the reliability of logs. This vulnerability affects users of the permission model on Node.js v20, v22, v24, and v25.

Affected products

• Node.js Node.js: from 20.0.0, before 20.20.0 (fixed in 20.20.0); from 22.0.0, before 22.22.0 (fixed in 22.22.0); from 24.0.0, before 24.13.0 (fixed in 24.13.0); from 25.0.0, before 25.3.0 (fixed in 25.3.0)

Published 2026-01-20. Last modified 2026-06-17.