Detect PraisonAI Call Server Unauthenticated Agent Access (CVE-2026-47396) in CrowdStrike LogScale
Detects exploitation of CVE-2026-47396, a critical authentication bypass in PraisonAI's call server component. When the CALL_SERVER_TOKEN environment variable is unset, the server exposes unauthenticated endpoints for listing, invoking, and deleting AI agents. An attacker can enumerate available agents, invoke arbitrary agent workflows, or destroy agent configurations without any credentials. CVSS 9.8 (Critical), CWE-284/CWE-306.
MITRE ATT&CK
- Tactic
- Initial Access Persistence Impact
LogScale Detection Query
#event_simpleName=NetworkConnectIP4 OR #event_simpleName=NetworkReceiveAcceptIP4
| CommandLine = /praisonai|call_server|uvicorn/
| RemotePort in (8000, 8080, 8090, 5000)
| groupBy([RemoteAddressIP4, LocalAddressIP4, RemotePort], function=count())
| rename RemoteAddressIP4 as source_ip, LocalAddressIP4 as dest_ip
| where count > 2
| sort count descCrowdStrike Falcon LogScale query detecting network connections to PraisonAI call server processes (uvicorn/praisonai) on common API ports, identifying potential exploitation attempts by enumerating inbound connections.
Data Sources
Required Tables
False Positives & Tuning
- Legitimate PraisonAI usage with properly configured tokens appearing as unauthenticated at network layer
- Development environments where the call server is intentionally exposed
- Container orchestration health checks against call server ports
- Internal microservice traffic to PraisonAI instances
Other platforms for CVE-2026-47396
Testing Methodology
Validate this detection against 4 adversary techniques from Atomic Red Team. Each test below lists the behaviour to exercise and the telemetry you should expect to see. Executable commands and cleanup steps are available with Pro.
- Test 1Enumerate PraisonAI agents without authentication
Expected signal: Web server access log entry: GET /agents HTTP/1.1 from test source IP, no Authorization header, HTTP 200 response with JSON agent listing
- Test 2Invoke PraisonAI agent without authentication
Expected signal: Web server access log entry: POST /invoke HTTP/1.1 from test source IP, no Authorization header, HTTP 200 or 202 response; application log showing agent invocation
- Test 3Delete PraisonAI agent configuration without authentication
Expected signal: Web server access log entry: DELETE /delete HTTP/1.1 from test source IP, no Authorization header; application log showing agent deletion event
- Test 4Confirm CALL_SERVER_TOKEN absence in running process
Expected signal: Process environment read via /proc/<pid>/environ; output contains no CALL_SERVER_TOKEN entry
Unlock Pro Content
Get the full detection package for CVE-2026-47396 including response playbook, investigation guide, and atomic red team tests.