CVE-2026-61704 (GCVE-0-2026-61704)
Vulnerability from cvelistv5 – Published: 2026-08-20 16:21 – Updated: 2026-08-25 15:03
VLAI
EPSS
VEX
Title
link-preview-js DNS Rebinding SSRF Bypass / Incomplete Fix for CVE-2026-43897
Summary
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.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-25 15:03 UTC
CWE
- CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
GitHub_M
CNA
References
5 references
| URL | Tags |
|---|---|
| https://github.com/OP-Engineering/link-preview-js… | x_refsource_CONFIRM |
| https://github.com/OP-Engineering/link-preview-js… | x_refsource_MISC |
| https://github.com/OP-Engineering/link-preview-js… | x_refsource_MISC |
| https://github.com/OP-Engineering/link-preview-js… | x_refsource_MISC |
| https://github.com/OP-Engineering/link-preview-js… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| OP-Engineering | link-preview-js |
Affected:
< 4.0.4
|
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The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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