CVE-2026-32769

Fullchain is an umbrella project for deploying a ready-to-use CTF platform. In versions prior to 0.1.1, due to a mis-written NetworkPolicy, a malicious actor can pivot from a subverted application to any Pod out of the origin namespace. The flawed inter-ns NetworkPolicy breaks the security-by-default property expected as part of the deployment program, leading to a potential lateral movement. This issue has been fixed in version 0.1.1. To workaround, delete the failing network policy that should be prefixed by inter-ns- in the target namespace.

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/ctfer-io/fullchain/commit/dbcb90178bcb07a3f5a1efa4c6350f3a6ce34f51	Patch
https://github.com/ctfer-io/fullchain/releases/tag/v0.1.1	Release Notes
https://github.com/ctfer-io/fullchain/security/advisories/GHSA-hxm7-9q36-c77f	Exploit Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:ctfer:fullchain:*:*:*:*:*:go:*:*

History

No history.

Information

Published : 2026-03-20 01:15

Updated : 2026-06-17 10:36

NVD link : CVE-2026-32769

Mitre link : CVE-2026-32769

CVE.ORG link : CVE-2026-32769

JSON object : View

Products Affected

ctfer

fullchain

CWE

CWE-284

Improper Access Control

NVD-CWE-noinfo

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In versions prior to 0.1.1, due to a mis-written NetworkPolicy, a malicious actor can pivot from a subverted application to any Pod out of the origin namespace. The flawed inter-ns NetworkPolicy breaks the security-by-default property expected as part of the deployment program, leading to a potential lateral movement. This issue has been fixed in version 0.1.1. To workaround, delete the failing network policy that should be prefixed by inter-ns- in the target namespace."}, {"lang": "es", "value": "Fullchain es un proyecto paraguas para desplegar una plataforma CTF lista para usar. En versiones anteriores a la 0.1.1, debido a una NetworkPolicy mal escrita, un actor malicioso puede pivotar desde una aplicaci\u00f3n subvertida a cualquier Pod fuera del espacio de nombres de origen. La NetworkPolicy inter-ns defectuosa rompe la propiedad de seguridad por defecto esperada como parte del programa de despliegue, lo que lleva a un posible movimiento lateral. Este problema ha sido solucionado en la versi\u00f3n 0.1.1. Como soluci\u00f3n alternativa, elimine la NetworkPolicy fallida que deber\u00eda tener el prefijo inter-ns- en el espacio de nombres de destino."}], "lastModified": "2026-06-17T10:36:21.197", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:ctfer:fullchain:*:*:*:*:*:go:*:*", "vulnerable": true, "matchCriteriaId": "F43E8FC8-D19D-4C6B-8BD4-DB12AC54195B", "versionEndExcluding": "0.1.1"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}