Auth bypass in Katanemo Plano
CVE-2026-108863
Katanemo Plano through 0.4.37 contains a missing authentication vulnerability that allows unauthenticated network attackers to access the Envoy admin interface, which is bound to all host interfaces on port 9901. Attackers can request the /config_dump endpoint to read configured LLM provider API keys in plaintext from the WASM filter configuration.
Vulnerability class: Broken Authentication
Published .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- hackmd.io/@1ExmmukzRMWN7B4gQ4W-4Q/katanemo-plano-envoy-admin-config-secret-disc… (third-party-advisory)
- github.com/katanemo/plano/blob/0.4.37/config/envoy.template.yaml (technical-description)
- github.com/katanemo/plano/blob/0.4.37/cli/planoai/config_generator.py (technical-description)
- github.com/katanemo/plano (product)
- www.vulncheck.com/advisories/katanemo-plano-through-0.4.37-missing-authenticati… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-108863?
- CVE-2026-108863 is a high-severity vulnerability in Katanemo Plano, classified under Missing Authentication for Critical Function. CVSS score: 7.5/10. Published 2026-10-11.
- How severe is CVE-2026-108863?
- High severity. CVSS v3 base score is 7.5 out of 10.