Suspicious PraisonAI Vulnerability Scanner User Agent via Webserver

PremiumReviewedSigma · Medium · v1
Category
webserver
Author
HuntRule
Published
2026-10-29
Updated
2026-10-29

ATT&CK techniques

Recon → Initial Access
  1. Resource Dev

  2. Execution

  3. Persistence

  4. Priv Esc

  5. Defense Evasion

  6. Cred Access

  7. Discovery

  8. Lateral Movement

  9. Collection

  10. C2

  11. Exfiltration

  12. Impact

What it detects

This rule detects HTTP requests carrying the CVE-Detector automated scanner User-Agent that was used to mass-exploit the PraisonAI authentication bypass (CVE-2026-44338). The scanner probes exposed AI agent frameworks within hours of disclosure. Presence of this User-Agent indicates targeted reconnaissance or active exploitation of internet-facing services.

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Pivot detection · T1190 · 9 related

Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.