Vulnerability Description
Apache NiFi 1.1.0 through 2.7.2 are missing authorization when updating configuration properties on extension components that have specific Required Permissions based on the Restricted annotation. The Restricted annotation indicates additional privileges required to add the annotated component to the flow configuration, but framework authorization did not check restricted status when updating a component previously added. The missing authorization requires a more privileged user to add a restricted component to the flow configuration, but permits a less privileged user to make property configuration changes. Apache NiFi installations that do not implement different levels of authorization for Restricted components are not subject to this vulnerability because the framework enforces write permissions as the security boundary. Upgrading to Apache NiFi 2.8.0 is the recommended mitigation.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Apache | Nifi | >= 1.1.0, < 2.8.0 |
Related Weaknesses (CWE)
References
- https://lists.apache.org/thread/jf6bkt9sk6xvshy8xyxv3vtlxd340345Mailing ListVendor Advisory
- http://www.openwall.com/lists/oss-security/2026/02/16/1Mailing ListThird Party Advisory
FAQ
What is CVE-2026-25903?
CVE-2026-25903 is a vulnerability with a CVSS score of 6.6 (MEDIUM). Apache NiFi 1.1.0 through 2.7.2 are missing authorization when updating configuration properties on extension components that have specific Required Permissions based on the Restricted annotation. The...
How severe is CVE-2026-25903?
CVE-2026-25903 has been rated MEDIUM with a CVSS base score of 6.6/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-25903?
Check the references section above for vendor advisories and patch information. Affected products include: Apache Nifi.