Web Application Suspicious Activity: POST Request Declinededit

A POST request to a web application returned a 403 response, which indicates the web application declined to process the request because the action requested was not allowed.

Rule type: query

Rule indices:

  • apm--transaction
  • traces-apm*

Severity: medium

Risk score: 47

Runs every: 5 minutes

Searches indices from: now-6m (Date Math format, see also Additional look-back time)

Maximum alerts per execution: 100



  • Elastic
  • APM

Version: 8 (version history)

Added (Elastic Stack release): 7.6.0

Last modified (Elastic Stack release): 7.15.0

Rule authors: Elastic

Rule license: Elastic License v2

Potential false positivesedit

Security scans and tests may result in these errors. Misconfigured or buggy applications may produce large numbers of these errors. If the source is unexpected, the user unauthorized, or the request unusual, these may indicate suspicious or malicious activity.

Rule queryedit

http.response.status_code:403 and http.request.method:post

Rule version historyedit

Version 8 (7.15.0 release)
  • Formatting only
Version 7 (7.14.0 release)
  • Updated query, changed from:

    http.response.status_code:403 and http.request.method:post
Version 6 (7.12.0 release)
  • Formatting only
Version 5 (7.11.2 release)
  • Formatting only
Version 4 (7.10.0 release)
  • Formatting only
Version 3 (7.9.0 release)
  • Formatting only
Version 2 (7.7.0 release)
  • Formatting only