CVE-2026-85738

{"id": "CVE-2026-85738", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-85738", "role": "CISA Coordinator", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-09-28T14:51:50.053724Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 6.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 4.0, "exploitabilityScore": 1.8}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "liketrek", "product": "TREK", "versions": [{"status": "affected", "version": "< 3.4.0"}]}]}], "published": "2026-09-24T19:17:18.193", "references": [{"url": "https://github.com/liketrek/TREK/commit/a2bd9be184a94997105ce190dad920c41e7b10df", "source": "security-advisories@github.com"}, {"url": "https://github.com/liketrek/TREK/pull/1540", "source": "security-advisories@github.com"}, {"url": "https://github.com/liketrek/TREK/releases/tag/v3.4.0", "source": "security-advisories@github.com"}, {"url": "https://github.com/liketrek/TREK/security/advisories/GHSA-9hpq-mrpx-mcxg", "source": "security-advisories@github.com"}, {"url": "https://github.com/liketrek/TREK/security/advisories/GHSA-9hpq-mrpx-mcxg", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-918"}]}], "descriptions": [{"lang": "en", "value": "TREK is a collaborative travel planner. Prior to 3.4.0, the checkSsrf logic in server/src/utils/ssrfGuard.ts does not recognize NAT64, 6to4, or Teredo IPv6 transition addresses that encode an IPv4 destination. An authenticated user who controls a DNS record can supply a URL whose AAAA result is a transition address embedding a private, loopback, or link-local IPv4 target, and isAlwaysBlocked and isPrivateNetwork classify the address as allowed. In a deployment that routes the applicable transition format, user-facing imports, webhooks, integrations, or plugin egress can reach internal services or cloud metadata and expose returned information. This issue is fixed in version 3.4.0."}], "lastModified": "2026-09-28T15:17:24.297", "sourceIdentifier": "security-advisories@github.com"}