CVE-2026-109432 Camunda Expression Injection via orQueries RCE
Authenticated attackers can inject JUEL expressions in orQueries to execute arbitrary OS commands, bypassing expression restrictions in Camunda.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-109432?
CVE-2026-109432 is a critical code injection vulnerability in Camunda 7, published on 19 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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.
Which versions are affected by CVE-2026-109432?
How do I fix CVE-2026-109432?
No fix has been published for CVE-2026-109432 yet. Limit exposure of the affected software until one is available.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2026-109432 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-109432 exists.
Sources
Also known as GHSA-mqfw-m4cx-w4jp.