Critical 9.8Published Oct 15, 2026

CVE-2026-111322Archon 0.2.13 through 0.11.1 Missing Authentication via /api/* Control API

Updated under an hour ago (2026-10-19 04:50 UTC)

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It affects coleam00 Archon. Add what you run to find out whether that includes you.

EPSS puts the chance of exploitation in the next 30 days at 0.69%, higher than 52% of scored CVEs.

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Exploited in the last 30 days

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.

CVSS: 9.8 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-306
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): 0.69% (percentile 52)
Assigned by: VulnCheck
NVD analysis: Deferred
Record last updated: Oct 16, 2026
First seen by InfoSec Signals: Oct 15, 2026

Affected products

Affected products

coleam00 Archon coleam00:archon (from the name)	from 0.2.13 through 0.11.1	CNA record

References

https://hackmd.io/@hieuPenguinnn/archon-os-api-missing-authentication-defaultthird-party-advisory
https://github.com/coleam00/Archon/blob/v0.11.1/packages/server/src/routes/api.ts#L1749-L1756technical-description
https://github.com/coleam00/Archon/blob/v0.11.1/packages/server/src/auth/config.ts#L25-L27technical-description
https://github.com/coleam00/Archon/blob/v0.11.1/packages/server/src/index.ts#L909technical-description
https://github.com/coleam00/Archonproduct
https://www.vulncheck.com/advisories/archon-0.2.13-through-0.11.1-missing-authentication-via-api-control-apithird-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.