CVE-2025-23165 – Node.js ReadFileUtf8 Memory Leak Denial of Service

CVE ID : CVE-2025-23165

Published : May 19, 2025, 2:15 a.m. | 51 minutes ago

Description : In Node.js, the `ReadFileUtf8` internal binding leaks memory due to a corrupted pointer in `uv_fs_s.file`: a UTF-16 path buffer is allocated but subsequently overwritten when the file descriptor is set. This results in an unrecoverable memory leak on every call. Repeated use can cause unbounded memory growth, leading to a denial of service.

Impact:
* This vulnerability affects APIs relying on `ReadFileUtf8` on Node.js release lines: v20 and v22.

Severity: 3.7 | LOW

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