link-preview-js DNS Rebinding SSRF Bypass / Incomplete Fix for CVE-2026-43897

The existing advisory GHSA-4gp8-rjrq-ch6q / CVE-2026-43897 states that the SSRF issue was fixed in 4.0.1. However, 4.0.3 remains bypassable when the documented resolveDNSHost mitigation is used. Root cause: The library validates one resolved IP address through resolveDNSHost, but later performs...

GHSA-CPJF-6666-R8FX link-preview-js DNS Rebinding SSRF Bypass / Incomplete Fix for CVE-2026-43897

The existing advisory GHSA-4gp8-rjrq-ch6q / CVE-2026-43897 states that the SSRF issue was fixed in 4.0.1. However, 4.0.3 remains bypassable when the documented resolveDNSHost mitigation is used. Root cause: The library validates one resolved IP address through resolveDNSHost, but later performs...

CVE-2026-61704 link-preview-js DNS Rebinding SSRF Bypass / Incomplete Fix for CVE-2026-43897

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...

PT-2026-79062

Name of the Vulnerable Software and Affected Versions Link Preview JS versions prior to 4.0.4 Description A DNS rebinding condition exists in the resolveDNSHost mitigation within index.ts. The system validates a single resolved IP address but subsequently fetches the original hostname. This allow...

CVE-2026-61704: Server-Side Request Forgery (SSRF)

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...