CVE-2026-43897: Op-Engineering Link-Preview-Js

High severity, CVSS 8.7. EPSS: 0.5% chance of exploitation in the next 30 days.

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 products

Published 2026-05-11. Last modified 2026-06-17.