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
References
History
Mon, 19 Oct 2026 14:30:00 +0000
| Type | Values Removed | Values Added |
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| First Time appeared |
Duke-git
Duke-git lancet |
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| Vendors & Products |
Duke-git
Duke-git lancet |
Tue, 13 Oct 2026 19:00:00 +0000
| Type | Values Removed | Values Added |
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| 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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Status: PUBLISHED
Assigner: VulnCheck
Published: 2026-10-13T18:50:20.046Z
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.