{"id":"CVE-2026-32769","aliases":["GHSA-hxm7-9q36-c77f","GO-2026-4715"],"url":"https://o3.security/vulnerability/CVE-2026-32769","summary":"Fullchain's Invalid NetworkPolicy enables a malicious actor to pivot into another namespace","details":"### Impact\n\nDue to a mis-written NetworkPolicy, a malicious actor can pivot from a subverted application to any Pod out of the origin namespace.\nThis breaks the security-by-default property expected as part of the deployment program, leading to a potential lateral movement.\n\n### Patch\n\nRemoving the `inter-ns` NetworkPolicy patches the vulnerability. If updates are not possible in production environments, we recommend to manually delete it and update as soon as possible.\n\n### Workaround\n\nGiven your context, delete the failing network policy that should be prefixed by `inter-ns-` in the target namespace.\nYou can use the following to delete all matching network policy. If unsure of the outcome, please do it manually.\n\n```bash\nfor ns in $(kubectl get ns -o jsonpath='{.items[*].metadata.name}' | tr ' ' '\\n' | grep '^ns-'); do\n  kubectl -n \"$ns\" get networkpolicy -o name \\\n  | grep '^networkpolicy.networking.k8s.io/inter-ns-' \\\n  | xargs -r kubectl -n \"$ns\" delete\ndone\n```","published":"2026-03-20T00:18:55.991Z","modified":"2026-08-12T03:51:48.203279113Z","cvss":null,"epss":{"score":0.00501,"percentile":0.41674,"asOf":"2026-09-16"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Go","name":"github.com/ctfer-io/fullchain","fixedVersion":"0.1.1"}],"fix":{"url":"https://github.com/ctfer-io/fullchain/commit/dbcb90178bcb07a3f5a1efa4c6350f3a6ce34f51","label":"ctfer-io/fullchain@dbcb901"},"references":[{"type":"WEB","url":"https://github.com/ctfer-io/fullchain/releases/tag/v0.1.1"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/32xxx/CVE-2026-32769.json"},{"type":"ADVISORY","url":"https://github.com/ctfer-io/fullchain/security/advisories/GHSA-hxm7-9q36-c77f"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-32769"},{"type":"FIX","url":"https://github.com/ctfer-io/fullchain/commit/dbcb90178bcb07a3f5a1efa4c6350f3a6ce34f51"},{"type":"PACKAGE","url":"https://github.com/ctfer-io/fullchain"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:48.203279113Z"}}