{"id":"CVE-2026-79669","title":"Ech0 before 4.4.3 lacks authorization checks on system log endpoints allowing any authenticated non-admin user to read and stream all server logs","summary":"Ech0 before 4.4.3 lacks authorization checks on system log endpoints allowing any authenticated non-admin user to read and stream all server logs. Attackers can access historical logs and real-time log streams via GET /api/system/logs, G…","severity":"medium","cvss":4.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","cwe":["CWE-862"],"vendor":"lin-snow","product":"github.com/lin-snow/ech0","affected":["github.com/lin-snow/ech0 < 4.4.3"],"patched":["github.com/lin-snow/ech0 4.4.3"],"published":"2026-08-25","updated":"2026-09-23","sourceUpdated":"2026-09-23T18:14:58.577","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-79669","references":[{"url":"https://github.com/lin-snow/Ech0/security/advisories/GHSA-w8jj-cwmc-wgq2","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/ech0-before-missing-authorization-on-system-logs","label":"disclosure@vulncheck.com"},{"url":"https://github.com/lin-snow/Ech0/security/advisories/GHSA-w8jj-cwmc-wgq2","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"},{"url":"https://github.com/lin-snow/Ech0"},{"url":"https://github.com/lin-snow/Ech0/releases/tag/v4.4.3"}],"tags":["nvd","osv","go"],"epss":0.00281,"epssPercentile":0.20461,"aliases":["GHSA-w8jj-cwmc-wgq2","GO-2026-5701"],"ecosystem":"go","ingestedAt":"2026-08-27T19:27:47.724Z","slug":"CVE-2026-79669","body":"## Overview\n\nEch0 before 4.4.3 lacks authorization checks on system log endpoints allowing any authenticated non-admin user to read and stream all server logs. Attackers can access historical logs and real-time log streams via GET /api/system/logs, GET /api/system/logs/stream, and WS /ws/system/logs to gather reconnaissance data including internal file paths, error stack traces, and application state.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Package advisory (CVE-2026-79669)\n\nAffected packages:\n\n- `github.com/lin-snow/ech0 < 4.4.3`\n\nPatched in:\n\n- `github.com/lin-snow/ech0 4.4.3`\n\nSource: https://osv.dev/vulnerability/GHSA-w8jj-cwmc-wgq2","depth":"sunlit","depthScore":24,"depthScoreParts":{"impact":23.7,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}