{"affected":[{"defaultStatus":"unaffected","ecosystem":"golang","packageName":"github.com/coder/coder/v2","product":"coder","source":"CNA: VulnCheck","vendor":"coder","versions":[{"lessThan":"2.38.2","status":"affected","version":"2.38.0","versionType":"semver"},{"status":"unaffected","version":"2.38.2","versionType":"semver"}]},{"defaultStatus":"unaffected","ecosystem":"golang","packageName":"github.com/coder/coder/v2","product":"coder","source":"CNA: VulnCheck","vendor":"coder","versions":[{"lessThan":"2.37.6","status":"affected","version":"2.37.0","versionType":"semver"},{"status":"unaffected","version":"2.37.6","versionType":"semver"}]},{"defaultStatus":"unaffected","ecosystem":"golang","packageName":"github.com/coder/coder/v2","product":"coder","source":"CNA: VulnCheck","vendor":"coder","versions":[{"lessThan":"2.36.9","status":"affected","version":"2.36.0","versionType":"semver"},{"status":"unaffected","version":"2.36.9","versionType":"semver"}]},{"defaultStatus":"unaffected","ecosystem":"golang","packageName":"github.com/coder/coder/v2","product":"coder","source":"CNA: VulnCheck","vendor":"coder","versions":[{"lessThan":"2.34.14","status":"affected","version":"2.30.0","versionType":"semver"},{"status":"unaffected","version":"2.34.14","versionType":"semver"}]},{"defaultStatus":"unaffected","ecosystem":"golang","packageName":"github.com/coder/coder/v2","product":"coder","source":"CNA: VulnCheck","vendor":"coder","versions":[{"lessThan":"2.29.23","status":"affected","version":"2.24.0","versionType":"semver"},{"status":"unaffected","version":"2.29.23","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-2026-126308","cwes":["CWE-201"],"description":"The web dashboard in Coder 2.24.0 before 2.29.23, 2.30.0 before 2.34.14, 2.35.0 before 2.36.9, 2.37.0 before 2.37.6, and 2.38.0 before 2.38.2 replaces the $SESSION_TOKEN placeholder in external app URLs with a full-access API key without checking whether the app belongs to a sub-agent. Code running in a workspace can register a disguised sub-agent app with a custom protocol URL, so the owner's click sends their API key to an attacker-chosen destination.","epss":null,"exploits":[],"kev":null,"metrics":[{"score":8.7,"severity":"high","source":"CNA: VulnCheck","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:P/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N","version":"4.0"},{"score":7.7,"severity":"high","source":"CNA: VulnCheck","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N","version":"3.1"},{"score":8.7,"severity":"high","source":"NVD: disclosure@vulncheck.com","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:P/VC:H/VI:H/VA:N/SC:H/SI:H/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":7.7,"severity":"high","source":"NVD: disclosure@vulncheck.com","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N","version":"3.1"}],"modifiedAt":1794565056320,"publishedAt":1794562580400,"references":[{"source":"CNA: VulnCheck","tags":["vendor-advisory"],"url":"https://github.com/coder/coder/security/advisories/GHSA-2x8w-q434-f76p"},{"source":"CNA: VulnCheck","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/coder-2.38.0-before-2.38.2-session-token-leak-via-sub-agent-external-apps"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://github.com/coder/coder/security/advisories/GHSA-2x8w-q434-f76p"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://www.vulncheck.com/advisories/coder-2.38.0-before-2.38.2-session-token-leak-via-sub-agent-external-apps"}],"remediation":[],"revision":"9766fb8870e4552645c22352836aa2272b4443377e73ea9fba6817fcf9693a6c","sources":[{"modifiedAt":1794562580400,"name":"CNA: VulnCheck","retrievedAt":1794564593265,"url":"https://www.cve.org/CVERecord?id=CVE-2026-126308"},{"modifiedAt":1794565056320,"name":"NVD","retrievedAt":1794572187390,"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-126308"}],"ssvc":null,"status":"published","title":"Coder 2.38.0 before 2.38.2 Session Token Leak via Sub-Agent External Apps","updatedAt":1794572187390}