CVE-2026-43897Link Preview JS: vunerable to IPv6 and internal loopback attacks
Updated under an hour ago ()
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It affects OP-Engineering link-preview-js. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 8.7 HIGH (v4.0, CNA)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
- Weakness (CWE)
- CWE-918
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- GitHub_M
- NVD analysis
- Deferred
- Record last updated
- May 12, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
OP-Engineering link-preview-js op_engineering:link_preview_js (from the name) | before 4.0.1 | CNA record |
References
- https://github.com/OP-Engineering/link-preview-js/security/advisories/GHSA-4gp8-rjrq-ch6qx-refsource-confirm
- https://github.com/OP-Engineering/link-preview-js/pull/179x-refsource-misc
- https://github.com/OP-Engineering/link-preview-js/commit/4396d48909fab37553c0e93e26447fe218363edex-refsource-misc
- https://github.com/OP-Engineering/link-preview-js/releases/tag/4.0.1x-refsource-misc
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.