Vulnerability · Published Jun 23, 2025 · Assigned by harborist
CVE-2025-6547On Node.js < 3, pbkdf2 silently disregards Uint8Array input, returning static keys
Critical 9.1
In plain English
A critical-severity improper input validation in pbkdf2. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 40% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 4.0)9.1Critical
Exploit odds (30 days)0.5%top 59.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
Improper Input Validation vulnerability in pbkdf2 allows Signature Spoofing by Improper Validation.This issue affects pbkdf2: <=3.1.2.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu:22.04:LTS | node-pbkdf2 | no fix listed | UBUNTU-CVE-2025-6547 |
| Ubuntu:24.04:LTS | node-pbkdf2 | no fix listed | UBUNTU-CVE-2025-6547 |
| Ubuntu:25.10 | node-pbkdf2 | no fix listed | UBUNTU-CVE-2025-6547 |
| Ubuntu:26.04:LTS | node-pbkdf2 | no fix listed | UBUNTU-CVE-2025-6547 |
| npm | pbkdf2 | 3.1.3 | GHSA-v62p-rq8g-8h59 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| pbkdf2 | >= 1 <=3.1.2 |
Weakness: CWE-20 · Vector: CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:H/SI:H/SA:H