CVE-2026-68979: Apache NiFi: Missing Authorization for Components Referenced by Parameter Context Updates

[David Handermann <exceptionfactory () apache org>]

Severity: Medium 

Affected versions:

- Apache NiFi (org.apache.nifi:nifi-web-api) 1.10.0 through 2.10.0

Description:

Apache NiFI 1.10.0 through 2.10.0 provide a Parameter Context update REST API method that does not enforce 
authorization checking on components referencing Parameter values. Updating a Parameter Context can change parameter 
values that affect referencing components, but framework authorization was limited to read and write privileges on the 
Parameter Context itself. As a result of the missing authorization, an authenticated user authorized to modify a 
Parameter Context, but not authorized on referencing components, could alter Parameter values affecting those 
components. In deployments where a Parameter value contains executable scripting content, updating a Parameter can 
result in code execution during automatic component validation, without starting the referencing component. The impact 
was limited to stopped components by existing verification checks, and the issue applies only to deployments that use 
component-level authorization policies. Upgrading to Apache NiFi 2.11.0 is the recommended mitigation, which aligns the 
Parameter Context update method authorization with other methods, adding authorization checking on affected components.

This issue is being tracked as NIFI-16148 

Credit:

D0HY30N (finder)

References:

https://nifi.apache.org/
https://www.cve.org/CVERecord?id=CVE-2026-68979
https://issues.apache.org/jira/browse/NIFI-16148

Timeline:

2026-07-22: reported