| Name | 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. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| nodejs (PTS) | bullseye | 12.22.12~dfsg-1~deb11u4 | fixed |
| bullseye (security) | 12.22.12~dfsg-1~deb11u7 | fixed |
| bookworm, bookworm (security) | 18.20.4+dfsg-1~deb12u1 | fixed |
| forky, trixie | 20.19.2+dfsg-1 | fixed |
| sid | 20.19.4+dfsg-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| nodejs | source | (unstable) | (not affected) | | | |
Notes
- nodejs <not-affected> (Only affects Node 24)
https://nodejs.org/en/blog/vulnerability/july-2025-security-releases#hashdos-in-v8-cve-2025-27209---high