{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-126308", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "state": "PUBLISHED", "assignerShortName": "VulnCheck", "dateReserved": "2026-11-10T20:16:44.443Z", "datePublished": "2026-11-13T09:36:20.400Z", "dateUpdated": "2026-11-13T09:36:20.400Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-11-13T09:36:20.400Z"}, "datePublic": "2026-10-27T00:00:00.000Z", "title": "Coder 2.38.0 before 2.38.2 Session Token Leak via Sub-Agent External Apps", "descriptions": [{"lang": "en", "value": "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."}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "Insertion of Sensitive Information Into Sent Data", "cweId": "CWE-201", "type": "CWE"}]}], "affected": [{"vendor": "coder", "product": "coder", "defaultStatus": "unaffected", "packageURL": "pkg:golang/github.com/coder/coder/v2", "versions": [{"version": "2.38.0", "status": "affected", "versionType": "semver", "lessThan": "2.38.2"}, {"version": "2.38.2", "status": "unaffected", "versionType": "semver"}]}, {"vendor": "coder", "product": "coder", "defaultStatus": "unaffected", "packageURL": "pkg:golang/github.com/coder/coder/v2", "versions": [{"version": "2.37.0", "status": "affected", "versionType": "semver", "lessThan": "2.37.6"}, {"version": "2.37.6", "status": "unaffected", "versionType": "semver"}]}, {"vendor": "coder", "product": "coder", "defaultStatus": "unaffected", "packageURL": "pkg:golang/github.com/coder/coder/v2", "versions": [{"version": "2.36.0", "status": "affected", "versionType": "semver", "lessThan": "2.36.9"}, {"version": "2.36.9", "status": "unaffected", "versionType": "semver"}]}, {"vendor": "coder", "product": "coder", "defaultStatus": "unaffected", "packageURL": "pkg:golang/github.com/coder/coder/v2", "versions": [{"version": "2.30.0", "status": "affected", "versionType": "semver", "lessThan": "2.34.14"}, {"version": "2.34.14", "status": "unaffected", "versionType": "semver"}]}, {"vendor": "coder", "product": "coder", "defaultStatus": "unaffected", "packageURL": "pkg:golang/github.com/coder/coder/v2", "versions": [{"version": "2.24.0", "status": "affected", "versionType": "semver", "lessThan": "2.29.23"}, {"version": "2.29.23", "status": "unaffected", "versionType": "semver"}]}, {"vendor": "coder", "product": "coder", "defaultStatus": "unaffected", "packageURL": "pkg:golang/github.com/coder/coder/v2", "versions": [{"version": "2.35.0", "status": "affected", "versionType": "semver", "lessThan": "2.36.0"}, {"version": "2.36.0", "status": "unaffected", "versionType": "semver"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:coder:coder:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.38.0", "versionEndExcluding": "2.38.2"}]}]}, {"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:coder:coder:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.37.0", "versionEndExcluding": "2.37.6"}]}]}, {"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:coder:coder:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.36.0", "versionEndExcluding": "2.36.9"}]}]}, {"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:coder:coder:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.30.0", "versionEndExcluding": "2.34.14"}]}]}, {"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:coder:coder:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.24.0", "versionEndExcluding": "2.29.23"}]}]}, {"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:coder:coder:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.35.0", "versionEndExcluding": "2.36.0"}]}]}], "metrics": [{"format": "CVSS", "cvssV4_0": {"version": "4.0", "vectorString": "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", "attackVector": "NETWORK", "attackComplexity": "HIGH", "attackRequirements": "PRESENT", "privilegesRequired": "LOW", "userInteraction": "PASSIVE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "HIGH", "subIntegrityImpact": "HIGH", "subAvailabilityImpact": "NONE", "baseScore": 8.7, "baseSeverity": "HIGH"}}, {"format": "CVSS", "cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N", "attackVector": "NETWORK", "attackComplexity": "HIGH", "privilegesRequired": "LOW", "userInteraction": "REQUIRED", "scope": "CHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "NONE", "baseScore": 7.7, "baseSeverity": "HIGH"}}], "references": [{"url": "https://github.com/coder/coder/security/advisories/GHSA-2x8w-q434-f76p", "tags": ["vendor-advisory"], "name": "GitHub Security Advisory (GHSA-2x8w-q434-f76p)"}, {"name": "VulnCheck Advisory: Coder 2.38.0 before 2.38.2 Session Token Leak via Sub-Agent External Apps", "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"}], "credits": [{"lang": "en", "value": "manus-pi", "type": "reporter"}, {"lang": "en", "value": "EhabY", "type": "remediation developer"}], "x_generator": {"engine": "vulncheck-endgame"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "packageURL": "pkg:golang/github.com/coder/coder/v2", "product": "coder", "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", "packageURL": "pkg:golang/github.com/coder/coder/v2", "product": "coder", "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", "packageURL": "pkg:golang/github.com/coder/coder/v2", "product": "coder", "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", "packageURL": "pkg:golang/github.com/coder/coder/v2", "product": "coder", "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", "packageURL": "pkg:golang/github.com/coder/coder/v2", "product": "coder", "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", "packageURL": "pkg:golang/github.com/coder/coder/v2", "product": "coder", "vendor": "coder", "versions": [{"lessThan": "2.36.0", "status": "affected", "version": "2.35.0", "versionType": "semver"}, {"status": "unaffected", "version": "2.36.0", "versionType": "semver"}]}], "source": "disclosure@vulncheck.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "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."}], "id": "CVE-2026-126308", "lastModified": "2026-11-13T10:17:36.320", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.7, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 1.3, "impactScore": 5.8, "source": "disclosure@vulncheck.com", "type": "Primary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "HIGH", "attackRequirements": "PRESENT", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 8.7, "baseSeverity": "HIGH", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "LOW", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "HIGH", "subIntegrityImpact": "HIGH", "userInteraction": "PASSIVE", "valueDensity": "NOT_DEFINED", "vectorString": "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", "vulnAvailabilityImpact": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "disclosure@vulncheck.com", "type": "Secondary"}]}, "published": "2026-11-13T10:17:36.320", "references": [{"source": "disclosure@vulncheck.com", "url": "https://github.com/coder/coder/security/advisories/GHSA-2x8w-q434-f76p"}, {"source": "disclosure@vulncheck.com", "url": "https://www.vulncheck.com/advisories/coder-2.38.0-before-2.38.2-session-token-leak-via-sub-agent-external-apps"}], "sourceIdentifier": "disclosure@vulncheck.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-201"}], "source": "disclosure@vulncheck.com", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[2.38.0,2.38.2)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "2.38.2"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[2.37.0,2.37.6)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "2.37.6"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[2.36.0,2.36.9)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "2.36.9"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[2.30.0,2.34.14)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "2.34.14"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[2.24.0,2.29.23)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "2.29.23"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[2.35.0,2.36.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "2.36.0"}}], "enrichment": {"confidence": 90.0, "confidence_source": "inferred", "scores": [{"score": 90.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "coder", "source": "cna", "vendor": "coder"}, "product": "coder", "vendor": "coder"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[2.37.0,2.37.6)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "2.37.6"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "coder", "source": "cna", "vendor": "coder"}, "product": "coder", "vendor": "coder"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[2.36.0,2.36.9)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "2.36.9"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "coder", "source": "cna", "vendor": "coder"}, "product": "coder", "vendor": "coder"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[2.30.0,2.34.14)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "2.34.14"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "coder", "source": "cna", "vendor": "coder"}, "product": "coder", "vendor": "coder"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[2.24.0,2.29.23)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "2.29.23"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "coder", "source": "cna", "vendor": "coder"}, "product": "coder", "vendor": "coder"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[2.35.0,2.36.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "2.36.0"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "coder", "source": "cna", "vendor": "coder"}, "product": "coder", "vendor": "coder"}], "created": "2026-11-13T20:30:21.628171+00:00", "updated": "2026-11-13T20:30:21.628217+00:00", "vendors": ["coder", "coder$PRODUCT$coder"]}