CVE-2026-43897 | THREATINT

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.

PUBLISHED Reserved 2026-05-04 | Published 2026-05-11 | Updated 2026-05-12 | Assigner GitHub_M

HIGH: 8.7CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Problem types

CWE-918: Server-Side Request Forgery (SSRF)

Product status

< 4.0.1

affected

References

github.com/...iew-js/security/advisories/GHSA-4gp8-rjrq-ch6q

github.com/OP-Engineering/link-preview-js/pull/179

github.com/...ommit/4396d48909fab37553c0e93e26447fe218363ede

github.com/OP-Engineering/link-preview-js/releases/tag/4.0.1

cve.org (CVE-2026-43897)

nvd.nist.gov (CVE-2026-43897)

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