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

Detect and mitigate CVE-2026-32769 with GitLab Dependency Scanning

Secure your software supply chain by verifying that all open source dependencies used in your projects contain no disclosed vulnerabilities. Dependency Scanning using SBOM also detects vulnerabilities from proprietary advisories that this site does not include. Learn more about Dependency Scanning using SBOM →