Auth bypass in Coleam00 Archon
CVE-2026-111322
Archon 0.2.13 through 0.11.1 contains a missing authentication vulnerability that allows unauthenticated attackers to access the /api/* control API, which binds to 0.0.0.0 by default. Attackers with network access can send messages to the AI coding agent, which runs with bypassPermissions, to execute commands on the host as the Archon user.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
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/@hieuPenguinnn/archon-os-api-missing-authentication-default (third-party-advisory)
- github.com/coleam00/Archon/blob/v0.11.1/packages/server/src/routes/api.ts (technical-description)
- github.com/coleam00/Archon/blob/v0.11.1/packages/server/src/auth/config.ts (technical-description)
- github.com/coleam00/Archon/blob/v0.11.1/packages/server/src/index.ts (technical-description)
- github.com/coleam00/Archon (product)
- www.vulncheck.com/advisories/archon-0.2.13-through-0.11.1-missing-authenticatio… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-111322?
- CVE-2026-111322 is a critical-severity vulnerability in Coleam00 Archon, classified under Missing Authentication for Critical Function. CVSS score: 9.8/10. Published 2026-10-15.
- How severe is CVE-2026-111322?
- Critical severity. CVSS v3 base score is 9.8 out of 10.