{"id":"CVE-2026-43897","state":"PUBLISHED","title":"Link Preview JS: vunerable to IPv6 and internal loopback attacks","description":"Link Preview JS extracts web links information. Prior to 4.0.1, the library did not check for IPv6 loopback attacks. There was also a DNS attack, where an address could be resolved into an internal IP. This could cause internal data leaks. This vulnerability is fixed in 4.0.1.","publishedAt":"2026-05-11T21:14:40.495Z","updatedAt":"2026-05-12T16:40:05.641Z","severity":{"score":8.7,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["OP-Engineering link-preview-js"],"affected":[{"vendor":"OP-Engineering","product":"link-preview-js","versions":[{"version":"< 4.0.1","status":"affected"}]}],"references":["https://github.com/OP-Engineering/link-preview-js/security/advisories/GHSA-4gp8-rjrq-ch6q","https://github.com/OP-Engineering/link-preview-js/pull/179","https://github.com/OP-Engineering/link-preview-js/commit/4396d48909fab37553c0e93e26447fe218363ede","https://github.com/OP-Engineering/link-preview-js/releases/tag/4.0.1"],"weaknesses":["CWE-918"],"ingestedAt":"2026-10-29T20:11:57.932Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/43xxx/CVE-2026-43897.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-43897","state":"PUBLISHED","datePublished":"2026-05-11T21:14:40.495Z","dateUpdated":"2026-05-12T16:40:05.641Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-05-04T16:11:33.085Z"},"containers":{"cna":{"title":"Link Preview JS: vunerable to IPv6 and internal loopback attacks","descriptions":[{"lang":"en","value":"Link Preview JS extracts web links information. Prior to 4.0.1, the library did not check for IPv6 loopback attacks. There was also a DNS attack, where an address could be resolved into an internal IP. This could cause internal data leaks. This vulnerability is fixed in 4.0.1."}],"affected":[{"vendor":"OP-Engineering","product":"link-preview-js","versions":[{"version":"< 4.0.1","status":"affected"}]}],"references":[{"url":"https://github.com/OP-Engineering/link-preview-js/security/advisories/GHSA-4gp8-rjrq-ch6q","name":"https://github.com/OP-Engineering/link-preview-js/security/advisories/GHSA-4gp8-rjrq-ch6q","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/OP-Engineering/link-preview-js/pull/179","name":"https://github.com/OP-Engineering/link-preview-js/pull/179","tags":["x_refsource_MISC"]},{"url":"https://github.com/OP-Engineering/link-preview-js/commit/4396d48909fab37553c0e93e26447fe218363ede","name":"https://github.com/OP-Engineering/link-preview-js/commit/4396d48909fab37553c0e93e26447fe218363ede","tags":["x_refsource_MISC"]},{"url":"https://github.com/OP-Engineering/link-preview-js/releases/tag/4.0.1","name":"https://github.com/OP-Engineering/link-preview-js/releases/tag/4.0.1","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":8.7,"baseSeverity":"HIGH","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","version":"4.0"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-918","lang":"en","description":"CWE-918: Server-Side Request Forgery (SSRF)","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-05-11T21:14:40.495Z"},"source":{"advisory":"GHSA-4gp8-rjrq-ch6q","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-05-12T16:39:50.874250Z","id":"CVE-2026-43897","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-05-12T16:40:05.641Z"}}]}}}