Possible Nagios XI Path Traversal via Graphtemplates Directory Parameter

PremiumReviewedSigma · High · v1
Category
webserver
Author
HuntRule
Published
2026-10-17
Updated
2026-10-17

ATT&CK techniques

Initial Access → Discovery
  1. Recon

  2. Resource Dev

  3. Execution

  4. Persistence

  5. Priv Esc

  6. Defense Evasion

  7. Cred Access

  8. Lateral Movement

  9. Collection

  10. C2

  11. Exfiltration

  12. Impact

What it detects

This rule detects requests to the Nagios XI graphtemplates.php endpoint carrying a directory-traversal sequence in the dir parameter, the vulnerability used to read or include arbitrary files outside the intended template directory. A traversal payload against this endpoint indicates active exploitation of the Nagios XI local file inclusion flaw.

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