{"cve":"CVE-2026-33638","nvd":{"published":"2026-03-26T21:17:07.467","modified":"2026-06-17T10:37:49.680","status":"Analyzed","description":"Ech0 is an open-source, self-hosted publishing platform for personal idea sharing. Prior to version 4.2.0, `GET /api/allusers` is mounted as a public endpoint and returns user records without authentication. This allows remote unauthenticated user enumeration and exposure of user profile metadata. A fix is available in v4.2.0.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","score":5.3},"cwes":["CWE-862"],"references":["https://github.com/lin-snow/Ech0/commit/acbf1fd71011e6b9e1e6a911128056a19862f681","https://github.com/lin-snow/Ech0/releases/tag/v4.2.0","https://github.com/lin-snow/Ech0/security/advisories/GHSA-m983-7426-5hrj"],"products":["ech0:ech0"],"source":"nvd","synced_at":"2026-10-19T22:28:18.033120106+00:00"},"epss":{"cve":"CVE-2026-33638","score":0.00503,"percentile":0.43042,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-m983-7426-5hrj","url":"https://osv.dev/vulnerability/GHSA-m983-7426-5hrj","summary":"Ech0  authenticated user-list exposed data via public `/api/allusers` endpoint  ","modified":"2026-03-30T20:33:40.415017Z","packages":[{"ecosystem":"Go","name":"github.com/lin-snow/ech0","purl":"pkg:golang/github.com/lin-snow/ech0","ranges":["<1.4.8-0.20260322121226-acbf1fd71011"],"fixed":["1.4.8-0.20260322121226-acbf1fd71011"]}]},{"id":"GO-2026-4838","url":"https://osv.dev/vulnerability/GO-2026-4838","summary":"Ech0 authenticated user-list exposed data via public `/api/allusers` endpoint in github.com/lin-snow/ech0","modified":"2026-03-26T21:04:00.304810Z","packages":[{"ecosystem":"Go","name":"github.com/lin-snow/ech0","purl":"pkg:golang/github.com/lin-snow/ech0","ranges":["<1.4.8-0.20260322121226-acbf1fd71011"],"fixed":["1.4.8-0.20260322121226-acbf1fd71011"]}]}],"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."]}