SEPTEMBER 21, 2026
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Case File

CVE-2026-87976

HIGH · CVSS 8.1 EPSS 0.39%

Source: NVD + CISA KEV + EPSS · Published 2026-09-16 · Last synced 2026-09-21

CyberRota Analysis

AI-Generated

Apache NiFi Registry versions 0.4.0 through 2.11.0 are vulnerable to path manipulation due to improper handling of filesystem path components in uploaded NAR manifests, allowing authenticated users to perform unauthorized file system operations outside the designated storage directory. This flaw poses a significant risk as it can lead to data exposure or system compromise. Organizations using affected versions should prioritize upgrading to 2.12.0 to mitigate this vulnerability effectively.

CVE
CVE-2026-87976
Severity
HIGH
CVSS
8.1
EPSS
0.39%
Apache

Original NVD Description

Apache NiFi Registry 0.4.0 through 2.11.0 are subject to path manipulation when storing extension bundle content using group, artifact, and version coordinates from uploaded NAR manifests. The default file persistence provider used coordinates as filesystem path components without rejected parent-directory names, and the path-containment check compared an unnormalized resolved path. An authenticated user authorized to write and delete bundles in a bucket can upload a NAR with a crafted manifest resulting in file system operations outside of the file persistence directory. Upgrading to Apache NiFi Registry 2.12.0 is the recommended mitigation, which rejects parent-directory coordinates and requires a normalized path to remain a strict child of the storage root location.

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