{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-111934", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "state": "PUBLISHED", "assignerShortName": "VulnCheck", "dateReserved": "2026-10-17T12:20:52.372Z", "datePublished": "2026-10-17T18:46:44.142Z", "dateUpdated": "2026-10-17T18:46:44.142Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-10-17T18:46:44.142Z" }, "datePublic": "2026-08-11T00:00:00.000Z", "title": "Coder before 2.34.7 IP Spoofing via X-Forwarded-For Header", "descriptions": [ { "lang": "en", "value": "Coder before 2.34.7 contains an IP spoofing vulnerability in the ExtractRealIPAddress middleware that trusts the leftmost, client-supplied X-Forwarded-For value instead of the client IP appended by a reverse proxy. Attackers can send forged X-Forwarded-For values through appending proxies to bypass per-IP rate limits on login, one-time passcode, and password validation endpoints, enabling brute-force attacks, and to falsify IP addresses recorded in audit logs." } ], "problemTypes": [ { "descriptions": [ { "lang": "en", "description": "Use of Less Trusted Source", "cweId": "CWE-348", "type": "CWE" } ] } ], "affected": [ { "vendor": "coder", "product": "coder", "defaultStatus": "unaffected", "packageURL": "pkg:golang/github.com/coder/coder/v2", "versions": [ { "version": "0", "status": "affected", "versionType": "semver", "lessThan": "2.34.7" }, { "version": "2.34.7", "status": "unaffected", "versionType": "semver" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:a:coder:coder:*:*:*:*:*:*:*:*", "versionEndExcluding": "2.34.7" } ] } ] }, { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:a:coder:coder:*:*:*:*:*:*:*:*", "versionEndExcluding": "2.34.0" } ] } ] } ], "metrics": [ { "cvssV4_0": { "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "attackVector": "NETWORK", "baseScore": 6.3, "baseSeverity": "MEDIUM", "exploitMaturity": "NOT_DEFINED", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N", "version": "4.0", "vulnAvailabilityImpact": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "LOW", "vulnerabilityResponseEffort": "NOT_DEFINED" }, "format": "CVSS" }, { "cvssV3_1": { "attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 3.7, "baseSeverity": "LOW", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N", "version": "3.1" }, "format": "CVSS" } ], "references": [ { "url": "https://github.com/coder/coder/security/advisories/GHSA-vprw-xcrv-287h", "tags": [ "vendor-advisory" ], "name": "GitHub Security Advisory (GHSA-vprw-xcrv-287h)" }, { "name": "VulnCheck Advisory: Coder before 2.34.7 IP Spoofing via X-Forwarded-For Header", "tags": [ "third-party-advisory" ], "url": "https://www.vulncheck.com/advisories/coder-before-2.34.7-ip-spoofing-via-x-forwarded-for-header" } ], "x_generator": { "engine": "vulncheck-endgame" } } } }