Code execution via unauthenticated cross-origin backend requests
Published May 14, 2026 · Updated May 14, 2026
Code injection in coleam00 Archon 0.1.0 through 0.3.11 allows remote attackers to execute commands and read API keys via a crafted web page. The backend service on port 8181 omits authentication and CORS restrictions, so hostile origins can issue localhost requests that disclose configuration and invoke agent and UI APIs. Exploitation requires a victim to access attacker-controlled HTML while the backend is reachable; resulting access includes command execution, UI control, private data, and configured API keys.
Summary
What happened
Code injection in coleam00 Archon 0.1.0 through 0.3.11 allows remote attackers to execute commands and read API keys via a crafted web page. The backend service on port 8181 omits authentication and CORS restrictions, so hostile origins can issue localhost requests that disclose configuration and invoke agent and UI APIs. Exploitation requires a victim to access attacker-controlled HTML while the backend is reachable; resulting access includes command execution, UI control, private data, and configured API keys.
The record
- CVE
- CVE-2025-69443
- Published
- May 14, 2026
- Updated
- May 14, 2026
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-94, T1204.001
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- May 14, 2026CVE publishedPublication date reported by the CVE source.
- May 14, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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What is affected?
Affected products and versions are unavailable in this record.
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- Archon web-to-client attack video proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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