{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-111927", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "state": "PUBLISHED", "assignerShortName": "VulnCheck", "dateReserved": "2026-10-17T12:19:42.358Z", "datePublished": "2026-10-17T18:46:39.347Z", "dateUpdated": "2026-10-17T18:46:39.347Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-10-17T18:46:39.347Z" }, "datePublic": "2026-08-10T00:00:00.000Z", "title": "Coder before 2.35.4 Credential Theft via Workspace Proxy Hostname Prefix Match", "descriptions": [ { "lang": "en", "value": "Coder before 2.29.20, 2.33.0 before 2.33.12, 2.34.0 before 2.34.8, and 2.35.0 before 2.35.4 contains an improper hostname validation flaw in GetWorkspaceProxyByHostname whose SIMILAR TO pattern performs a prefix match, so any domain that is a string prefix of a workspace-proxy access URL is trusted as a proxy. Attackers owning such a domain can lure an authenticated victim to a crafted /api/v2/applications/auth-redirect link, capture the redirected application_connect API key, and replay it to access the victim's workspace apps." } ], "problemTypes": [ { "descriptions": [ { "lang": "en", "description": "Insufficiently Protected Credentials", "cweId": "CWE-522", "type": "CWE" } ] } ], "affected": [ { "vendor": "coder", "product": "coder", "defaultStatus": "unaffected", "packageURL": "pkg:golang/github.com/coder/coder/v2", "versions": [ { "version": "2.35.0", "status": "affected", "versionType": "semver", "lessThan": "2.35.4" }, { "version": "2.35.4", "status": "unaffected", "versionType": "semver" } ] }, { "vendor": "coder", "product": "coder", "defaultStatus": "unaffected", "packageURL": "pkg:golang/github.com/coder/coder/v2", "versions": [ { "version": "2.34.0", "status": "affected", "versionType": "semver", "lessThan": "2.34.8" }, { "version": "2.34.8", "status": "unaffected", "versionType": "semver" } ] }, { "vendor": "coder", "product": "coder", "defaultStatus": "unaffected", "packageURL": "pkg:golang/github.com/coder/coder/v2", "versions": [ { "version": "2.33.0", "status": "affected", "versionType": "semver", "lessThan": "2.33.12" }, { "version": "2.33.12", "status": "unaffected", "versionType": "semver" } ] }, { "vendor": "coder", "product": "coder", "defaultStatus": "unaffected", "packageURL": "pkg:golang/github.com/coder/coder/v2", "versions": [ { "version": "0", "status": "affected", "versionType": "semver", "lessThan": "2.29.20" }, { "version": "2.29.20", "status": "unaffected", "versionType": "semver" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:a:coder:coder:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.35.0", "versionEndExcluding": "2.35.4" } ] } ] }, { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:a:coder:coder:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.34.0", "versionEndExcluding": "2.34.8" } ] } ] }, { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:a:coder:coder:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.33.0", "versionEndExcluding": "2.33.12" } ] } ] }, { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:a:coder:coder:*:*:*:*:*:*:*:*", "versionEndExcluding": "2.29.20" } ] } ] } ], "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-h58h-qvv5-xvwg", "tags": [ "vendor-advisory" ], "name": "GitHub Security Advisory (GHSA-h58h-qvv5-xvwg)" }, { "name": "VulnCheck Advisory: Coder before 2.35.4 Credential Theft via Workspace Proxy Hostname Prefix Match", "tags": [ "third-party-advisory" ], "url": "https://www.vulncheck.com/advisories/coder-before-2.35.4-credential-theft-via-workspace-proxy-hostname-prefix-match" } ], "x_generator": { "engine": "vulncheck-endgame" } } } }