RCE in Camunda 7
CVE-2026-109432
Camunda 7.24.0 before 7.24.14 and 7.23.0 before 7.23.17 contains an expression injection vulnerability where AdhocQueryValidator.validate() fails to check sub-query expression maps within the orQueries field exposed by TaskQueryDto, allowing authenticated users to bypass the enableExpressionsInAdhocQueries restriction. Attackers can supply a malicious JUEL expression such as dueAfterExpression inside an orQueries entry to achieve arbitrary Java reflection and invoke java.lang.Runtime.exec, resulting in operating-system command execution as the engine service user.
Vulnerability class: Command Injection (OS Command Injection)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- codeant.ai/security-research/camunda-adhoc-query-expression-rce-cve-2026-109432 (technical-description, exploit)
- docs.camunda.org/enterprise/download/ (product, patch)
- www.vulncheck.com/advisories/camunda-expression-injection-via-orqueries-rce (third-party-advisory)
Frequently asked questions
- What is CVE-2026-109432?
- CVE-2026-109432 is a critical-severity vulnerability in Camunda 7, classified under OS Command Injection. CVSS score: 9.8/10. Published 2026-10-19.
- How severe is CVE-2026-109432?
- Critical severity. CVSS v3 base score is 9.8 out of 10.