Possible DotCMS Arbitrary File Upload and JSP Webshell Drop via api content (via webserver)
- Category
- webserver
- Author
- HuntRule
- Published
- 2026-09-07
- Updated
- 2026-09-07
ATT&CK techniques
Initial Access → PersistenceRecon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact
What it detects
This rule detects multipart POST or PUT requests to the DotCMS content API whose filename carries path traversal sequences aimed at the webapps ROOT html directory. This is the 0day exploitation path that drops a .jsp webshell outside the intended upload location for remote code execution. Detecting it surfaces webshell installation against internet-facing DotCMS instances.
Reporting behind it
Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.
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