CVE-2026-78674: WSO2 BPMN System REST API command injection in input validation

CVE-2026-78674 · Severity: high · CVSS 8.8 · Published 2026-10-28

WSO2's BPMN System provides workflow and business process management via REST APIs. An authenticated attacker can send malformed API requests to execute arbitrary commands on the server with the privileges of the application's runtime account, potentially leading to full system compromise depending on those account permissions.

Vendors: Wso2.

Quick answers

Is CVE-2026-78674 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-78674 being exploited in the wild.
How severe is CVE-2026-78674?
High severity, with a CVSS score of 8.8, published 28 October 2026.
Which products and versions are affected?
WSO2 BPMN System.
Is there a fix for CVE-2026-78674?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-78674 attacked?
It is attacked over the network, in a web application.
Am I affected by CVE-2026-78674?
Check whether you run Wso2 BPMN System. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The BPMN System REST APIs lack sufficient input validation, allowing authenticated users to inject and execute arbitrary commands through crafted API parameters. This is a post-authentication command injection vulnerability in the REST API layer. An attacker with valid credentials gains command execution at the privilege level of the application's service account.

Affected products

  • WSO2 BPMN System

Timeline

  • 2026-10-28: disclosed

References

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