{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-61704", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-07-10T18:51:13.919Z", "datePublished": "2026-08-20T16:21:10.450Z", "dateUpdated": "2026-08-20T16:21:10.450Z"}, "containers": {"cna": {"title": "link-preview-js DNS Rebinding SSRF Bypass / Incomplete Fix for CVE-2026-43897", "problemTypes": [{"descriptions": [{"cweId": "CWE-918", "lang": "en", "description": "CWE-918: Server-Side Request Forgery (SSRF)", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/OP-Engineering/link-preview-js/security/advisories/GHSA-cpjf-6666-r8fx", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/OP-Engineering/link-preview-js/security/advisories/GHSA-cpjf-6666-r8fx"}, {"name": "https://github.com/OP-Engineering/link-preview-js/pull/181", "tags": ["x_refsource_MISC"], "url": "https://github.com/OP-Engineering/link-preview-js/pull/181"}, {"name": "https://github.com/OP-Engineering/link-preview-js/commit/6ee25043dd60b097eb70b4ce049aac94b28239e3", "tags": ["x_refsource_MISC"], "url": "https://github.com/OP-Engineering/link-preview-js/commit/6ee25043dd60b097eb70b4ce049aac94b28239e3"}, {"name": "https://github.com/OP-Engineering/link-preview-js/commit/f3a3dd84adbb9d32d06a933f44ff3eaa837f9a12", "tags": ["x_refsource_MISC"], "url": "https://github.com/OP-Engineering/link-preview-js/commit/f3a3dd84adbb9d32d06a933f44ff3eaa837f9a12"}, {"name": "https://github.com/OP-Engineering/link-preview-js/releases/tag/4.0.4", "tags": ["x_refsource_MISC"], "url": "https://github.com/OP-Engineering/link-preview-js/releases/tag/4.0.4"}], "affected": [{"vendor": "OP-Engineering", "product": "link-preview-js", "versions": [{"version": "< 4.0.4", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-08-20T16:21:10.450Z"}, "descriptions": [{"lang": "en", "value": "Link Preview JS extracts web links information. Prior to 4.0.4, the resolveDNSHost mitigation in index.ts validates one resolved IP address but fetches the original hostname, allowing an attacker-controlled DNS server to return a public address during validation and a loopback or internal address during the final connection. This DNS rebinding condition bypasses the SSRF protection and can cause the server-side preview fetch to reach internal HTTP resources. Redirect handling is affected by the same validation-to-fetch mismatch. This issue is fixed in version 4.0.4."}], "source": {"advisory": "GHSA-cpjf-6666-r8fx", "discovery": "UNKNOWN"}}}}

{}

{"affected": [{"affectedData": [{"product": "link-preview-js", "vendor": "OP-Engineering", "versions": [{"status": "affected", "version": "< 4.0.4"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Link Preview JS extracts web links information. Prior to 4.0.4, the resolveDNSHost mitigation in index.ts validates one resolved IP address but fetches the original hostname, allowing an attacker-controlled DNS server to return a public address during validation and a loopback or internal address during the final connection. This DNS rebinding condition bypasses the SSRF protection and can cause the server-side preview fetch to reach internal HTTP resources. Redirect handling is affected by the same validation-to-fetch mismatch. This issue is fixed in version 4.0.4."}], "id": "CVE-2026-61704", "lastModified": "2026-08-20T17:18:51.940", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-08-20T17:18:51.940", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/OP-Engineering/link-preview-js/commit/6ee25043dd60b097eb70b4ce049aac94b28239e3"}, {"source": "security-advisories@github.com", "url": "https://github.com/OP-Engineering/link-preview-js/commit/f3a3dd84adbb9d32d06a933f44ff3eaa837f9a12"}, {"source": "security-advisories@github.com", "url": "https://github.com/OP-Engineering/link-preview-js/pull/181"}, {"source": "security-advisories@github.com", "url": "https://github.com/OP-Engineering/link-preview-js/releases/tag/4.0.4"}, {"source": "security-advisories@github.com", "url": "https://github.com/OP-Engineering/link-preview-js/security/advisories/GHSA-cpjf-6666-r8fx"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-918"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,4.0.4)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "link-preview-js", "source": "cna", "vendor": "OP-Engineering"}, "product": "link-preview-js", "vendor": "op-engineering"}], "created": "2026-08-20T18:00:03.692920+00:00", "updated": "2026-08-20T20:30:05.841471+00:00", "vendors": ["op-engineering", "op-engineering$PRODUCT$link-preview-js"]}