CriticalVulnerability

CVE-2026-111322: Archon missing authentication exposes control API to unauthenticated attackers

Source: NVD(opens in a new tab)
Identifier: CVE-2026-111322
Published: October 15, 2026
Record updated: October 15, 2026

Known exploitation: Not listed in the CISA Known Exploited Vulnerabilities catalog at the last check.

Summary

Archon versions 0.2.13 through 0.11.1 lack authentication on the /api/* control API, which binds to 0.0.0.0 by default. Unauthenticated attackers with network access can send messages to the AI coding agent, which runs with bypassPermissions, and execute commands on the host as the Archon user.

Mitigation

The source does not state a fix yet. Check the original advisory for updates.

Details

Scores and exploitation

CVSS score: 9.8(critical)
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector: network
Attack complexity: low
Privileges required: none
User interaction: none
EPSS: Not scored. FIRST had not published an EPSS score for this CVE when it was last checked on October 15, 2026.
Disclosure date: October 15, 2026

Weaknesses and techniques

Weakness (CWE): CWE-306
Attack pattern (CAPEC): CAPEC-115

Classification

Attack type: Other
Attack sophistication: Trivial
AI component targeted: Agent
Impact: Confidentiality,
Integrity,
Availability
Labels: security

How this record was produced

Summaries, mitigations and labels on this page are generated automatically from the source. The linked source is authoritative. The source gives this advisory a description and no title, so the title above is a headline generated from the source text.

Original source: https://nvd.nist.gov/vuln/detail/CVE-2026-111322

First tracked: October 15, 2026 at 08:09 PM ET, from NVD/CVE Database

Classifier: claude-haiku-5-5, prompt v4

Classifier confidence: 85% (self-assessed)

Summary

Mitigation

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