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PatchSiren cyber security CVE debrief

CVE-2026-111322 coleam00 CVE debrief

AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-10-15T21:43:31.045Z and has not been modified since then. The missing authentication vulnerability in Archon 0.2.13 through 0.11.1 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. Defenders responsible for Archon deployments, especially those with network-accessible /api/* control API endpoints, should assess exposure and verify the effectiveness of current mechanisms.

Vendor
coleam00
Product
Archon
CVSS
CRITICAL 9.3
CISA KEV
Not listed in stored evidence
Original CVE published
2026-10-15
Original CVE updated
2026-10-16
Advisory published
2026-10-15
Advisory updated
2026-10-16

Who should care

Defenders responsible for Archon deployments, especially those with network-accessible /api/* control API endpoints, should assess exposure and verify the effectiveness of current authentication mechanisms.

Why it matters

The missing authentication vulnerability in Archon 0.2.13 through 0.11.1 allows unauthenticated attackers to access the /api/* control API and execute commands on the host as the Archon user, which can lead to unauthorized access and potential command execution.

  • Verify exposure of Archon deployments to unauthenticated attacks
  • Assess the effectiveness of current authentication mechanisms for /api/* control API endpoints
  • Implement authentication for /api/* control API endpoints to prevent unauthorized access
  • Monitor for suspicious activity on Archon deployments

Technical summary

The 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. The vulnerability allows unauthenticated attackers to access the /api/* control API and execute commands on the host as the Archon user, which can lead to unauthorized access and potential command execution. The source item includes references to technical descriptions and a third-party advisory.

Defensive priority

Defenders should prioritize verifying exposure of Archon deployments, especially those with network-accessible /api/* control API endpoints, and assess the effectiveness of current authentication mechanisms.

Recommended defensive actions

  • Verify exposure of Archon deployments, especially those with network-accessible /api/* control API endpoints
  • Assess the effectiveness of current authentication mechanisms
  • Implement authentication for /api/* control API endpoints
  • Monitor for suspicious activity on Archon deployments
  • Review compensating controls for exposed systems while remediation is scheduled and verified
  • Check relevant monitoring, detection, and logs for exposed assets that need extra review
  • Track exceptions, retest remediated assets, and close the item only after evidence is documented.

Evidence notes

The CVE record and source item provide details on the missing authentication vulnerability in Archon 0.2.13 through 0.11.1. The vulnerability allows unauthenticated attackers to access the /api/* control API and execute commands on the host as the Archon user. The source item includes references to technical descriptions and a third-party advisory.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-111322 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-111322

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-111322 NVD vulnerability detail

    Publisher, destination, and source semantics verified

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

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

  • Archon 0.2.13 through 0.11.1 Missing Authentication via /api/* Control API

    Unverified legacy reference

    URL: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/111xxx/CVE-2026-111322.json

    cve_program_cvelist_v5

  • Source reference

    Unverified legacy reference

    URL: https://hackmd.io/@hieuPenguinnn/archon-os-api-missing-authentication-default

    Supplemental source - third-party-advisory

  • Source reference

    Unverified legacy reference

    URL: https://github.com/coleam00/Archon/blob/v0.11.1/packages/server/src/routes/api.ts

    Supplemental source - technical-description

  • Source reference

    Unverified legacy reference

    URL: https://github.com/coleam00/Archon/blob/v0.11.1/packages/server/src/auth/config.ts

    Supplemental source - technical-description

  • Source reference

    Unverified legacy reference

    URL: https://github.com/coleam00/Archon/blob/v0.11.1/packages/server/src/index.ts

    Supplemental source - technical-description

  • Source reference

    Unverified legacy reference

    URL: https://github.com/coleam00/Archon

    Supplemental source - product

  • Source reference

    Unverified legacy reference

    URL: https://www.vulncheck.com/advisories/archon-0.2.13-through-0.11.1-missing-authentication-via-api-control-api

    Supplemental source - third-party-advisory

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.