{"cve":"CVE-2025-6011","nvd":{"published":"2025-08-01T18:15:56.713","modified":"2026-06-17T10:00:59.130","status":"Analyzed","description":"A timing side channel in Vault and Vault Enterprise’s (“Vault”) userpass auth method allowed an attacker to distinguish between existing and non-existing users, and potentially enumerate valid usernames for Vault’s Userpass auth method. Fixed in Vault Community Edition 1.20.1 and Vault Enterprise 1.20.1, 1.19.7, 1.18.12, and 1.16.23.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N","score":3.7},"cwes":["CWE-203"],"references":["https://discuss.hashicorp.com/t/hcsec-2025-15-timing-side-channel-in-vault-s-userpass-auth-method/76034"],"products":["hashicorp:vault"],"source":"nvd","synced_at":"2026-10-19T22:05:46.678065081+00:00"},"epss":{"cve":"CVE-2025-6011","score":0.00356,"percentile":0.29375,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-mwgr-84fv-3jh9","url":"https://osv.dev/vulnerability/GHSA-mwgr-84fv-3jh9","summary":"Hashicorp Vault has an Observable Discrepancy on Existing and Non-Existing Users","modified":"2026-09-10T03:50:27.195186830Z","packages":[{"ecosystem":"Go","name":"github.com/hashicorp/vault","purl":"pkg:golang/github.com/hashicorp/vault","ranges":["<1.20.1"],"fixed":["1.20.1"]}]},{"id":"GO-2025-3839","url":"https://osv.dev/vulnerability/GO-2025-3839","summary":"Hashicorp Vault has an Observable Discrepancy on Existing and Non-Existing Users in github.com/hashicorp/vault","modified":"2026-02-04T03:13:41.955462Z","packages":[{"ecosystem":"Go","name":"github.com/hashicorp/vault","purl":"pkg:golang/github.com/hashicorp/vault","ranges":["<1.20.1"],"fixed":["1.20.1"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}