CVE-2025-66524: Apache NiFi: Deserialization of Untrusted Data in GetAsanaObject Processor

[David Handermann <exceptionfactory () apache org>]

Severity: 

Affected versions:

- Apache NiFi (org.apache.nifi:nifi-asana-processors) 1.20.0 through 2.6.0

Description:

Apache NiFi 1.20.0 through 2.6.0 include the GetAsanaObject Processor, which requires integration with a configurable 
Distribute Map Cache Client Service for storing and retrieving state information. The GetAsanaObject Processor used 
generic Java Object serialization and deserialization without filtering. Unfiltered Java object deserialization does 
not provide protection against crafted state information stored in the cache server configured for GetAsanaObject. 
Exploitation requires an Apache NiFi system running with the GetAsanaObject Processor, and direct access to the 
configured cache server. Upgrading to Apache NiFi 2.7.0 is the recommended mitigation, which replaces Java Object 
serialization with JSON serialization. Removing the GetAsanaObject Processor located in the nifi-asana-processors-nar 
bundle also prevents exploitation.

This issue is being tracked as NIFI-15292 

Credit:

Jaeyeong Lee (finder)

References:

https://nifi.apache.org/
https://www.cve.org/CVERecord?id=CVE-2025-66524
https://issues.apache.org/jira/browse/NIFI-15292

Timeline:

2025-12-01: reported
2025-12-04: resolved