{"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":"2026-08-25T15:03:17.040Z"},"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"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-08-25T15:03:06.178339Z","id":"CVE-2026-61704","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"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":"2026-08-25T15:03:17.040Z"}}]}}