VULNERABILITY INTELLIGENCE
CVE-2025-27209
CVSS score7.5 HIGH
EPSS probability1.25%
CISA KEVNot currently listed
Published2025-07-18
Last modified2026-06-17
CVSS vectorCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Description
The V8 release used in Node.js v24.0.0 has changed how string hashes are computed using rapidhash. This implementation re-introduces the HashDoS vulnerability as an attacker who can control the strings to be hashed can generate many hash collisions - an attacker can generate collisions even without knowing the hash-seed. * This vulnerability affects Node.js v24.x users.
Weakness classification
- 134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-407