Lancet through 2.3.9 contains an SSRF protection bypass vulnerability in netutil.IsInternalIP that misclassifies IPv6 private, link-local, CGNAT and transition addresses as external. Attackers can supply hostnames resolving to these address forms, including NAT64, 6to4 or Teredo embedding internal IPv4, to reach internal services or cloud metadata endpoints.
Metrics
Affected Vendors & Products
Advisories
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Fixes
Solution
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Workaround
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References
History
Tue, 13 Oct 2026 19:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Lancet through 2.3.9 contains an SSRF protection bypass vulnerability in netutil.IsInternalIP that misclassifies IPv6 private, link-local, CGNAT and transition addresses as external. Attackers can supply hostnames resolving to these address forms, including NAT64, 6to4 or Teredo embedding internal IPv4, to reach internal services or cloud metadata endpoints. | |
| Title | Lancet through 2.3.9 SSRF Protection Bypass via netutil.IsInternalIP | |
| First Time appeared |
Lancet Project
Lancet Project lancet |
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| Weaknesses | CWE-918 | |
| CPEs | cpe:2.3:a:lancet_project:lancet:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Lancet Project
Lancet Project lancet |
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| References |
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| Metrics |
cvssV3_1
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Projects
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Status: PUBLISHED
Assigner: VulnCheck
Published:
Updated: 2026-10-13T19:24:52.860Z
Reserved: 2026-10-13T18:00:16.590Z
Link: CVE-2026-110240
No data.
Status : Awaiting Analysis
Published: 2026-10-13T19:18:49.350
Modified: 2026-10-13T20:17:28.220
Link: CVE-2026-110240
No data.
OpenCVE Enrichment
No data.
Weaknesses