Soumettre #883727: provectus kafka-ui 0.7.2 Improper Access Controls

Groovy guard bypass RCE in executeSmartFilterTest (v0.7.2)

https://github.com/provectus/kafka-ui/

The vulnerability allows any authenticated user to execute arbitrary operating system commands on the
server, bypassing the filtering.groovy.enabled security control that was introduced to prevent
Groovy-based code execution.

Summary

The PUT /api/smartfilters/testexecutions endpoint executes arbitrary Groovy scripts without
checking the filtering.groovy.enabled property. When an administrator sets
filtering.groovy.enabled=false (the default) to disable Groovy script execution, the restriction
only applies to the message filtering endpoint (GET /api/clusters/.../messages). The
testexecutions endpoint is not guarded by this check and will execute any Groovy script regardless
of the setting. This allows any authenticated user to achieve remote code execution on the server.

Technical Details

The vulnerability is in MessagesController.java. The executeSmartFilterTest method (line 75) does
not call checkIfFilteringGroovyEnabled(), while getTopicMessages does. The method passes the
attacker-supplied filterCode directly to MessageFilters.createMsgFilter() with type GROOVY_SCRIPT,
which compiles and evaluates it using GroovyScriptEngineImpl.

Relevant source locations:
kafka-ui-api/src/main/java/com/provectus/kafka/ui/controller/MessagesController.java, line 75
kafka-ui-api/src/main/java/com/provectus/kafka/ui/service/MessagesService.java, line 86
kafka-ui-api/src/main/java/com/provectus/kafka/ui/emitter/MessageFilters.java, line 41

• La source: ⚠️ https://github.com/provectus/kafka-ui/issues/4567
• Utilisateur: geochen (UID 78995)
• Soumission: 09/07/2026 02:58 (il y a 2 mois)
• Modérer: 23/08/2026 15:57 (2 months later)
• Statut: Accepté
• Entrée VulDB: 394555 [provectus kafka-ui jusqu’à 0.7.2 Groovy Code MessagesController.java executeSmartFilterTest élévation de privilèges]
• Points: 20