CVE-2026-110240
4.8 MEDIUMpublic exploit availablePublished 2026-10-13 · Updated 2026-10-13
AI analysis for this CVE has not been generated yet. Raw NVD data is shown below.
NVD 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.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
Weaknesses
CWE-918
Public exploit & PoC references
- https://github.com/duke-git/lancet
- https://github.com/duke-git/lancet/blob/v1.4.6/netutil/net.go#L158-L170
- https://github.com/duke-git/lancet/blob/v2.3.9/netutil/net.go#L192-L205
- https://github.com/duke-git/lancet/commit/835111c832939a85416d686a1e99d5fe7060c9b4
- https://github.com/duke-git/lancet/issues/356
- https://github.com/duke-git/lancet/pull/357
- https://github.com/duke-git/lancet/issues/356
All references
- https://github.com/duke-git/lancet
- https://github.com/duke-git/lancet/blob/v1.4.6/netutil/net.go#L158-L170
- https://github.com/duke-git/lancet/blob/v2.3.9/netutil/net.go#L192-L205
- https://github.com/duke-git/lancet/commit/835111c832939a85416d686a1e99d5fe7060c9b4
- https://github.com/duke-git/lancet/issues/356
- https://github.com/duke-git/lancet/pull/357
- https://www.vulncheck.com/advisories/lancet-through-2.3.9-ssrf-protection-bypass-via-netutil-isinternalip
- https://github.com/duke-git/lancet/issues/356
Source data: NVD (nvd.nist.gov), public domain. Exploit-DB.ai adds local AI analysis for defensive use only.
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