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CVE-2026-87976

8.1, high

Apache Software Foundation Apache NiFi Registry Path Traversal Vulnerability

NVD (opens in a new tab) CVE.org (opens in a new tab)
CVSS
8.1, high high CVSS v3.1
EPSS, next 30 days
0.8% higher than 55.4% of scored CVEs
Exploitation
No public evidence
Published
16 Sept 2026a month ago

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.

Details

Vendor
Apache Software Foundation
Product
Apache NiFi Registry
Weakness
CWE-22 (opens in a new tab)
Status
Analyzed
Updated
21 Sept 2026
Assigner
security@apache.org

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

References 2

Advisories 2

The kind is read from NVD's tags where present and from the shape of the URL otherwise, so treat it as a hint.

Other Apache Software Foundation CVEs

Every Apache Software Foundation CVE we hold

Same vendor in what we hold, not a known link between the flaws.

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  • CVE-2026-86089 Apache Software Foundation Apache NiFi Missing Authorization Vulnerability EPSS 0.4% 7.1, high
  • CVE-2026-82617 The two built-in name-finder patterns exposed by opennlp.tools.namefind.RegexNameFinderFactory - DEFAULT_REGEX_NAME_FINDER.EMAIL and… EPSS 0.8% 9.8, critical
  • CVE-2026-71257 Apache Software Foundation Apache Wicket Allocation of Resources Without Limits or Throttling Vulnerability EPSS 0.7% 7.5, high
  • CVE-2026-74848 Apache Software Foundation Apache APISIX HTTP Request Smuggling Vulnerability EPSS 0.6% 7.5, high
  • CVE-2026-75005 Inefficient Algorithmic Complexity vulnerability in Apache APISIX EPSS 0.7% 7.5, high
  • CVE-2026-75020 Improper Neutralization of Special Elements used in an LDAP Query ('LDAP Injection') vulnerability in Apache APISIX EPSS 0.5% 8.1, high

Beyond this page

Is CVE-2026-87976 in your network?

This page tells you how dangerous CVE-2026-87976 is out there. Whether it sits on one of your devices, only a scan of your own network can tell. That is what our systems do, every day, for the companies we protect.

  • EXYS7600 OCELOT

    Find it before attackers do

    Ocelot scans your network on a schedule and reports every vulnerability it finds by its CVE identifier, with its CVSS score and how many of your hosts are affected. A finding like CVE-2026-87976 comes with the devices to patch.

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  • EXYS7950 KONDRA

    Detect it if it's exploited

    Until the patch is applied, Kondra monitors your network, events and endpoints in real time. It keeps an inventory of the software installed on every endpoint, and its anomaly detection rules flag what an attacker does once inside.

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Check your exposure

Assembled from the NVD 2.0 API, the CISA Known Exploited Vulnerabilities Catalog and FIRST EPSS. Scores are as of our last collection on 17 Oct 2026, not the live upstream state.