CVE-2026-32769: Fullchain's Invalid NetworkPolicy enables a malicious actor to pivot into another namespace

March 16, 2026 (updated April 24, 2026)

Due to a mis-written NetworkPolicy, a malicious actor can pivot from a subverted application to any Pod out of the origin namespace. This breaks the security-by-default property expected as part of the deployment program, leading to a potential lateral movement.

References

github.com/advisories/GHSA-hxm7-9q36-c77f
github.com/ctfer-io/fullchain/commit/dbcb90178bcb07a3f5a1efa4c6350f3a6ce34f51
github.com/ctfer-io/fullchain/releases/tag/v0.1.1
github.com/ctfer-io/fullchain/security/advisories/GHSA-hxm7-9q36-c77f
nvd.nist.gov/vuln/detail/CVE-2026-32769

Code Behaviors & Features

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