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

> Unauthenticated attackers can access the Envoy admin interface to read plaintext LLM provider API keys from the configuration.

- **Severity:** High 8.7 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 11 Oct 2026
- **Updated:** 13 Oct 2026
- **Also known as:** GHSA-54m9-qc5w-93rc

## What is CVE-2026-108863?

CVE-2026-108863 is a high-severity missing authorization vulnerability in Katanemo Plano, published on 11 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official 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.

Weakness: CWE-306 (Missing Authentication for Critical Functionality)

## Which versions are affected by CVE-2026-108863?


## How do I fix CVE-2026-108863?

No fix has been published for CVE-2026-108863 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-108863 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-108863 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-108863 and fix it if it is affected.

What it is: CVE-2026-108863 is a high-severity missing authorization vulnerability in Katanemo Plano, published on 11 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-108863 exists.

Affected product: Katanemo Plano. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-108863/ (Markdown: https://insights.sbomify.com/CVE-2026-108863/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-108863
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-108863
- OSV: https://osv.dev/vulnerability/CVE-2026-108863

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-108863/
Summaries are generated and may contain mistakes; the official description above is the record.