{"affected":[{"defaultStatus":"unaffected","ecosystem":"golang","packageName":"github.com/coder/coder/v2","product":"coder","source":"CNA: VulnCheck","vendor":"coder","versions":[{"lessThan":"2.38.4","status":"affected","version":"2.38.0","versionType":"semver"},{"status":"unaffected","version":"2.38.4","versionType":"semver"}]},{"defaultStatus":"unaffected","ecosystem":"golang","packageName":"github.com/coder/coder/v2","product":"coder","source":"CNA: VulnCheck","vendor":"coder","versions":[{"lessThan":"2.37.8","status":"affected","version":"2.37.0","versionType":"semver"},{"status":"unaffected","version":"2.37.8","versionType":"semver"}]},{"defaultStatus":"unaffected","ecosystem":"golang","packageName":"github.com/coder/coder/v2","product":"coder","source":"CNA: VulnCheck","vendor":"coder","versions":[{"lessThan":"2.36.11","status":"affected","version":"2.36.0","versionType":"semver"},{"status":"unaffected","version":"2.36.11","versionType":"semver"}]},{"defaultStatus":"unaffected","ecosystem":"golang","packageName":"github.com/coder/coder/v2","product":"coder","source":"CNA: VulnCheck","vendor":"coder","versions":[{"lessThan":"2.34.16","status":"affected","version":"2.30.0","versionType":"semver"},{"status":"unaffected","version":"2.34.16","versionType":"semver"}]},{"defaultStatus":"unaffected","ecosystem":"golang","packageName":"github.com/coder/coder/v2","product":"coder","source":"CNA: VulnCheck","vendor":"coder","versions":[{"lessThan":"2.29.24","status":"affected","version":"2.26.0","versionType":"semver"},{"status":"unaffected","version":"2.29.24","versionType":"semver"}]},{"defaultStatus":"unaffected","ecosystem":"golang","packageName":"github.com/coder/coder/v2","product":"coder","source":"CNA: VulnCheck","vendor":"coder","versions":[{"lessThan":"2.36.0","status":"affected","version":"2.35.0","versionType":"semver"},{"status":"unaffected","version":"2.36.0","versionType":"semver"}]}],"cveId":"CVE-2026-126403","cwes":["CWE-863"],"description":"Coder 2.26.0 before 2.29.24, 2.30.0 before 2.34.16, 2.35.0 before 2.36.11, 2.37.0 before 2.37.8, and 2.38.0 before 2.38.4 contains an improper authorization flaw in the external agent credentials endpoint, which returns the workspace agent token to users with only workspace read access rather than ssh permission. Authenticated users with roles such as Template Admin or Organization Admin can use the token to read the owner's private Git SSH key and Git provider OAuth tokens, and impersonate the agent to receive the owner's sessions.","epss":{"date":"2026-11-13","percentile":0.3498,"score":0.00402},"exploits":[],"kev":null,"metrics":[{"score":8.5,"severity":"high","source":"CNA: VulnCheck","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","version":"4.0"},{"score":6.5,"severity":"medium","source":"CNA: VulnCheck","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N","version":"3.1"},{"score":8.5,"severity":"high","source":"NVD: disclosure@vulncheck.com","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/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","version":"4.0"},{"score":6.5,"severity":"medium","source":"NVD: disclosure@vulncheck.com","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N","version":"3.1"}],"modifiedAt":1794585321571,"publishedAt":1794562546335,"references":[{"source":"CNA: VulnCheck","tags":["vendor-advisory"],"url":"https://github.com/coder/coder/security/advisories/GHSA-9frj-7f83-x984"},{"source":"CNA: VulnCheck","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/coder-2.38.0-before-2.38.4-authorization-bypass-via-external-agent-credentials-endpoint"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://github.com/coder/coder/security/advisories/GHSA-9frj-7f83-x984"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://www.vulncheck.com/advisories/coder-2.38.0-before-2.38.4-authorization-bypass-via-external-agent-credentials-endpoint"}],"remediation":[],"revision":"a0ad712d6db60a3cc4648a3e682fd3af119fc07c6e7a85bd315ba23de66eaa05","sources":[{"modifiedAt":1794585321571,"name":"CNA: VulnCheck","retrievedAt":1794586214270,"url":"https://www.cve.org/CVERecord?id=CVE-2026-126403"},{"modifiedAt":1794565064910,"name":"NVD","retrievedAt":1794572196780,"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-126403"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1794586219426,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-126403"}],"ssvc":{"assessedAt":1794584123703,"automatable":"no","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"total"},"status":"published","title":"Coder 2.38.0 before 2.38.4 Authorization Bypass via External Agent Credentials Endpoint","updatedAt":1794586219426}