Malicious Text4Shell Apache Commons Text Interpolation Payload in HTTP Request
- Category
- webserver
- Author
- HuntRule
- Published
- 2026-10-05
- Updated
- 2026-10-05
ATT&CK techniques
Initial Access → ExecutionRecon
Resource Dev
Initial Access
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact
What it detects
This rule detects HTTP requests containing Apache Commons Text StringSubstitutor interpolation payloads such as script, dns or url lookups used to exploit CVE-2022-42889 (Text4Shell) for remote code execution. Attackers embed these interpolation strings to trigger arbitrary command execution on vulnerable servers. Presence of these lookup prefixes in request data is a strong exploitation indicator.
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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