CVE-2026-43897CWE-918

Link Preview JS: vunerable to IPv6 and internal loopback attacks

High · published May 11, 2026

CVSS v4.0
8.7
EPSS
1%
Percentile
44.6
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
8.7 · HIGH
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
EPSS
0.00540 · 44.6th percentile
Weakness
CWE-918 · Server-Side Request Forgery (SSRF)
Published
2026-05-11T21:14Z
EPSS history
Timeline
  • 11 MAY 21:14Z
    Link Preview JS: vunerable to IPv6 and internal loopback attacks
    cvelistv5