CVE-2026-32769Fullchain's Invalid NetworkPolicy enables a malicious actor to pivot into another namespace
Updated under an hour ago ()
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It affects ctfer-io fullchain and 1 other product. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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Free account, 1 product
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
- 7.1 HIGH (v4.0, CNA)CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H
- Weakness (CWE)
- CWE-284
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- GitHub_M
- NVD analysis
- Analyzed
- Record last updated
- Mar 20, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
ctfer-io fullchain ctfer_io:fullchain (from the name) | before 0.1.1 | CNA record |
ctfer fullchain ctfer:fullchain | before 0.1.1 | NVD |
References
- https://github.com/ctfer-io/fullchain/security/advisories/GHSA-hxm7-9q36-c77fx-refsource-confirm, exploit, vendor-advisory
- https://github.com/ctfer-io/fullchain/commit/dbcb90178bcb07a3f5a1efa4c6350f3a6ce34f51x-refsource-misc, patch
- https://github.com/ctfer-io/fullchain/releases/tag/v0.1.1x-refsource-misc, release-notes
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.