PT-2026-32513 · Apache · Apache Nifi

John Walker · CVE-2026-39816 · Published 2026-04-13 · Updated 2026-05-12

Positive Technologies (AI Summary)

CVSS v3.1

8.8

High

Base vector

AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Apache NiFi (affected versions not specified)

Description The TinkerpopClientService component of the Apache NiFi data processing platform contains access control errors. Specifically, it lacks the required Execute Code permission, which could allow a remote attacker to execute arbitrary code.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

RCE

Missing Authorization

Improper Access Control

Weakness Enumeration

CWE-862

CWE-284

Related Identifiers

BDU:2026-05723

BIT-NIFI-2026-39816

CVE-2026-39816

GHSA-2J9M-25XV-MP6R

Affected Products

Apache Nifi

References · 20

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/39xxx/CVE-2026-39816.json · Exploit
• 🔥 https://github.com/ZeroPathAI/nifi-CVE-2026-39816-poc · Exploit
• https://lists.apache.org/thread/gh9g7xwvv4l20gzff6q3367snf35ctcb · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-2j9m-25xv-mp6r · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-39816 · Security Note
• https://osv.dev/vulnerability/BIT-nifi-2026-39816 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-05723 · Security Note
• https://osv.dev/vulnerability/CVE-2026-39816 · Vendor Advisory
• https://github.com/apache/nifi/pull/11108 · Note
• https://github.com/apache/nifi · Note
• https://github.com/apache/nifi/commit/72fab7dde74edfd1063b57e87b0334340c1fbe93 · Note
• https://zeropath.com/blog/nifi-cve-2026-39816-privesc-rce · Note
• https://twitter.com/LeftenantZero/status/2054030386834055457 · Twitter Post
• https://repo.maven.apache.org/maven2 · Note
• https://lists.apache.org/thread/xnx23t6so8c674sh9f5ofz5k08rg4hcp · Note