CVE-2026-32769
CRITICALFullchain's Invalid NetworkPolicy enables a malicious actor to pivot into another namespace
Title source: cnaDescription
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.
References (3)
Core 3
Core References
X_Refsource_Confirm x_refsource_confirm
https://github.com/ctfer-io/fullchain/security/advisories/GHSA-hxm7-9q36-c77f
X_Refsource_Misc x_refsource_misc
https://github.com/ctfer-io/fullchain/commit/dbcb90178bcb07a3f5a1efa4c6350f3a6ce34f51
X_Refsource_Misc x_refsource_misc
https://github.com/ctfer-io/fullchain/releases/tag/v0.1.1
Scores
CVSS v3
9.8
EPSS
0.0050
EPSS Percentile
38.7%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-284
Status
published
Products (3)
ctfer/fullchain
< 0.1.1
ctfer-io/fullchain
0 - 0.1.1Go
ctfer-io/fullchain
< 0.1.1
Published
Mar 20, 2026
Tracked Since
Mar 20, 2026