What’s Vulnerable › Vulnerabilities

CVE-2026-108863: Katanemo Plano through 0.4.37 Missing Authentication on Envoy Admin Interface

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-11 · updated 2026-10-16
• Weakness: CWE-306

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.

Affected products

• Katanemo Plano: through 0.4.37

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

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