Missing Authorization Affecting org.apache.nifi:nifi-other-graph-services package, versions [2.0.0-M1,2.9.0)
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published14 May 2026
- disclosed8 May 2026
- creditJohn Walker
Introduced: 8 May 2026
CVE-2026-39816 (opens in a new tab)How to fix?
Upgrade org.apache.nifi:nifi-other-graph-services to version 2.9.0 or higher.
Overview
Affected versions of this package are vulnerable to Missing Authorization in the configuration process of the optional TinkerpopClientService. An attacker can execute arbitrary code by submitting Groovy scripts through the ByteCode Submission feature without possessing the required permissions.
Note:
This is only exploitable if fine-grained authorization is enabled and the optional TinkerpopClientService is installed.