Expression Injection Vulnerability in Camunda by Camunda
CVE-2026-109432

9.3CRITICAL

Key Information:

Vendor

Camunda

Status
Camunda 7
Vendor
CVE Published:
19 October 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-109432?

Camunda versions prior to 7.24.14 and 7.23.17 are susceptible to an expression injection vulnerability associated with the AdhocQueryValidator. This weakness allows authenticated users to bypass restrictions set for expressions in adhoc queries by manipulating the orQueries field in TaskQueryDto. By injecting a malicious Java Unified Expression Language (JUEL) expression such as dueAfterExpression, attackers can execute arbitrary Java methods, potentially leading to command execution on the underlying operating system with the privileges of the engine service user.

Affected Version(s)

Camunda 7 7.24.0 < 7.24.14

Camunda 7 7.23.0 < 7.23.17

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-109432 - Proof of Concept

References

https://codeant.ai/security-research/camunda-adhoc-query-...
technical-descriptionexploit
https://docs.camunda.org/enterprise/download/
productpatch
https://www.vulncheck.com/advisories/camunda-expression-i...
third-party-advisory

CVSS V4

Score:
9.3
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

CodeAnt AI Security Research Team
.