CVE-2026-85738

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-85738", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-09-04T14:50:16.719Z", "datePublished": "2026-09-24T18:09:31.268Z", "dateUpdated": "2026-09-28T14:51:56.222Z"}, "containers": {"cna": {"title": "TREK: SSRF Guard Bypass via IPv6 Transition Addresses (NAT64/6to4)", "problemTypes": [{"descriptions": [{"cweId": "CWE-918", "lang": "en", "description": "CWE-918: Server-Side Request Forgery (SSRF)", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/liketrek/TREK/security/advisories/GHSA-9hpq-mrpx-mcxg", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/liketrek/TREK/security/advisories/GHSA-9hpq-mrpx-mcxg"}, {"name": "https://github.com/liketrek/TREK/pull/1540", "tags": ["x_refsource_MISC"], "url": "https://github.com/liketrek/TREK/pull/1540"}, {"name": "https://github.com/liketrek/TREK/commit/a2bd9be184a94997105ce190dad920c41e7b10df", "tags": ["x_refsource_MISC"], "url": "https://github.com/liketrek/TREK/commit/a2bd9be184a94997105ce190dad920c41e7b10df"}, {"name": "https://github.com/liketrek/TREK/releases/tag/v3.4.0", "tags": ["x_refsource_MISC"], "url": "https://github.com/liketrek/TREK/releases/tag/v3.4.0"}], "affected": [{"vendor": "liketrek", "product": "TREK", "versions": [{"version": "< 3.4.0", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-09-24T18:09:31.268Z"}, "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."}], "source": {"advisory": "GHSA-9hpq-mrpx-mcxg", "discovery": "UNKNOWN"}}, "adp": [{"references": [{"url": "https://github.com/liketrek/TREK/security/advisories/GHSA-9hpq-mrpx-mcxg", "tags": ["exploit"]}], "metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-09-28T14:51:50.053724Z", "id": "CVE-2026-85738", "options": [{"Exploitation": "poc"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-09-28T14:51:56.222Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-85738", "role": "CISA Coordinator", "options": [{"Exploitation": "poc"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-09-28T14:51:50.053724Z"}}}], "references": [{"url": "https://github.com/liketrek/TREK/security/advisories/GHSA-9hpq-mrpx-mcxg", "tags": ["exploit"]}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-09-28T14:51:33.529Z"}}], "cna": {"title": "TREK: SSRF Guard Bypass via IPv6 Transition Addresses (NAT64/6to4)", "source": {"advisory": "GHSA-9hpq-mrpx-mcxg", "discovery": "UNKNOWN"}, "metrics": [{"cvssV3_1": {"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"}}], "affected": [{"vendor": "liketrek", "product": "TREK", "versions": [{"status": "affected", "version": "< 3.4.0"}]}], "references": [{"url": "https://github.com/liketrek/TREK/security/advisories/GHSA-9hpq-mrpx-mcxg", "name": "https://github.com/liketrek/TREK/security/advisories/GHSA-9hpq-mrpx-mcxg", "tags": ["x_refsource_CONFIRM"]}, {"url": "https://github.com/liketrek/TREK/pull/1540", "name": "https://github.com/liketrek/TREK/pull/1540", "tags": ["x_refsource_MISC"]}, {"url": "https://github.com/liketrek/TREK/commit/a2bd9be184a94997105ce190dad920c41e7b10df", "name": "https://github.com/liketrek/TREK/commit/a2bd9be184a94997105ce190dad920c41e7b10df", "tags": ["x_refsource_MISC"]}, {"url": "https://github.com/liketrek/TREK/releases/tag/v3.4.0", "name": "https://github.com/liketrek/TREK/releases/tag/v3.4.0", "tags": ["x_refsource_MISC"]}], "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."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-918", "description": "CWE-918: Server-Side Request Forgery (SSRF)"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-09-24T18:09:31.268Z"}}}, "cveMetadata": {"cveId": "CVE-2026-85738", "state": "PUBLISHED", "dateUpdated": "2026-09-28T14:51:56.222Z", "dateReserved": "2026-09-04T14:50:16.719Z", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "datePublished": "2026-09-24T18:09:31.268Z", "assignerShortName": "GitHub_M"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"product": "TREK", "vendor": "liketrek", "versions": [{"status": "affected", "version": "< 3.4.0"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "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."}], "id": "CVE-2026-85738", "lastModified": "2026-09-28T15:17:24.297", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 4.0, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-85738", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-09-28T14:51:50.053724Z", "version": "2.0.3"}}]}, "published": "2026-09-24T19:17:18.193", "references": [{"source": "security-advisories@github.com", "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": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "url": "https://github.com/liketrek/TREK/security/advisories/GHSA-9hpq-mrpx-mcxg"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-918"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,3.4.0)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "TREK", "source": "cna", "vendor": "liketrek"}, "product": "trek", "vendor": "liketrek"}], "created": "2026-09-25T06:15:17.137993+00:00", "updated": "2026-09-25T08:15:17.046174+00:00", "vendors": ["liketrek", "liketrek$PRODUCT$trek"]}