CVE-2025-6547: On Node.js < 3, pbkdf2 silently disregards Uint8Array input, returning static keys
Vulnerability summary
CVE-2025-6547 is a critical (CVSS 9.1) Improper Input Validation vulnerability in gitlab-rails-ce-18.1. EPSS estimates a 0.46% chance of exploitation in the next 30 days, higher than 40.1% of scored vulnerabilities.
Severe, CVSS 9.1 (CVE.org); no exploitation reported by the 5 checked sources; EPSS 0% (FIRST, 03-11-2026)
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 2 · Related 3Timeline
- 23-06-2025PublishedVulnerability first disclosed.
- 12-02-2026Last modifiedVulnerability information updated.
Description
Improper Input Validation vulnerability in pbkdf2 allows Signature Spoofing by Improper Validation.This issue affects pbkdf2: <=3.1.2.
CVSS metrics
5 scores · 5 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated9.1CriticalCVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:H/SI:H/SA:H
- OSV · NpmEcosystem advisory · calculated9.1CriticalCVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:H/SI:H/SA:H
- OSV · ChainguardEcosystem advisory · calculated9.1CriticalCVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:H/SI:H/SA:H
- NVDNIST9.1CriticalCVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
EPSS trend
Probability
0.46%
Chance of exploitation in the next 30 days
Percentile
40%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.46% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Chainguard21 products
- gitlab-rails-ce-18.1< 18.1.6-r19
- gitlab-rails-ce-18.10All versions (No fix recorded)
- gitlab-rails-ce-18.11< 18.11.6-r7
- gitlab-rails-ce-18.5All versions (No fix recorded)
- gitlab-rails-ce-18.6All versions (No fix recorded)
Npm1 product
- pbkdf2≥ 1.0.0, < 3.1.3
Ubuntu1 product
- node-pbkdf2All versions (No fix recorded)
3 vendors · 23 products
References
8 links- github.com/browserify/pbkdf2/security/advisories/GHSA-v62p-rq8g-8h59Third Party AdvisoryREPORTWEBAdvisory
- github.com/browserify/pbkdf2PACKAGE