CVE-2025-66524

Apache NiFi: Deserialization of Untrusted Data in GetAsanaObject Processor

HIGH
8.8
CVSS Score
Published: December 19, 2025 at 09:24 AM UTC
Updated: June 17, 2026 at 09:56 AM UTC
1 product affected across 1 vendorNifi

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Severity
HIGH8.8
Exploit prediction
EPSS 0.6%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

1.20.0 ≤ v ≤ 2.6.01.20.0 ≤ v < 2.7.01.20.02.7.0 rc12.7.0 rc2

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (2)

Vendor AdvisoryIssue TrackingMailing List
Source: cverecord
https://lists.apache.org/thread/k9h004ydjg7opdvxr0nfywtzf33z60d7
Mailing List
Source: af854a3a-2127-422b-91ae-364da2661108
http://www.openwall.com/lists/oss-security/2025/12/18/2

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-502

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