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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.58%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 4.0
- 8.7 HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
- EPSS
- 0.58% probability · 48th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-306
- Source
- disclosure@vulncheck.com
EPSS moved from 0.4% on 12 October 2026 to 0.6% on 26 October 2026.
References
- https://github.com/katanemo/plano
- https://github.com/katanemo/plano/blob/0.4.37/cli/planoai/config_generator.py#L588-L656
- https://github.com/katanemo/plano/blob/0.4.37/config/envoy.template.yaml#L1-L3
- https://hackmd.io/@1ExmmukzRMWN7B4gQ4W-4Q/katanemo-plano-envoy-admin-config-secret-disclosure
- https://www.vulncheck.com/advisories/katanemo-plano-through-0.4.37-missing-authentication-on-envoy-admin-interface
- https://hackmd.io/@1ExmmukzRMWN7B4gQ4W-4Q/cve-2026-108863-katanemo-plano-envoy-admin-config-secret-disclosure
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.