High severity7.5NVD Advisory· Published Aug 20, 2026· Updated Sep 18, 2026
CVE-2026-61704
CVE-2026-61704
Description
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 during the final connection. This DNS rebinding condition bypasses the SSRF protection and can cause the server-side preview fetch to reach internal HTTP resources. Redirect handling is affected by the same validation-to-fetch mismatch. This issue is fixed in version 4.0.4.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
link-preview-jsnpm | < 4.0.4 | 4.0.4 |
Affected products
1- Range: <4.0.4
Patches
Vulnerability mechanics
References
7- github.com/advisories/GHSA-cpjf-6666-r8fxghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-61704ghsaADVISORY
- github.com/OP-Engineering/link-preview-js/commit/6ee25043dd60b097eb70b4ce049aac94b28239e3nvdWEB
- github.com/OP-Engineering/link-preview-js/commit/f3a3dd84adbb9d32d06a933f44ff3eaa837f9a12nvdWEB
- github.com/OP-Engineering/link-preview-js/pull/181nvdWEB
- github.com/OP-Engineering/link-preview-js/releases/tag/4.0.4nvdWEB
- github.com/OP-Engineering/link-preview-js/security/advisories/GHSA-cpjf-6666-r8fxnvdWEB
News mentions
0No linked articles in our index yet.