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THREATINT
PUBLISHED

CVE-2025-27209



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.

Reserved 2025-02-20 | Published 2025-07-18 | Updated 2025-07-18 | Assigner hackerone


HIGH: 7.5CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Product status

Default status
unaffected

24.0.0 before 24.4.1
affected

References

nodejs.org/en/blog/vulnerability/july-2025-security-releases

cve.org (CVE-2025-27209)

nvd.nist.gov (CVE-2025-27209)

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