Unrated

Authorization bypass in Apache NiFi Process Group replacement

IdentifiersCVE-2026-44914CWE-862

CVE-2026-44914 affects Apache NiFi, specifically the nifi-web-api component, in versions 1.12.0 through 2.9.0. The vulnerability is caused by missing authorization checks during replacement of Process Groups that include extension components whose use is governed by NiFi’s Restricted annotation. The Restricted annotation is intended to mark components that require additional privileges beyond general write access. However, when handling requests to replace Process Groups, the framework did not verify the restricted-status authorization for included components. As a result, a user permitted to perform general write operations could introduce Restricted components through Process Group replacement without possessing the intended additional permissions.

For your environment

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ANALYST BRIEF

Impact, mitigation & remediation

What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.

Impact

What an attacker gets, and what they’ve been doing with it.

Successful exploitation allows a user with general write access to bypass the intended Restricted-component authorization model and add extension components marked as Restricted. This can undermine administrative security boundaries in deployments that rely on separate authorization for Restricted components, enabling unauthorized use of higher-risk functionality that should require elevated privileges.

Mitigation

If you can’t patch tonight, do this now.

The primary mitigation provided in the advisory is to upgrade to Apache NiFi 2.9.0. Deployments that do not implement distinct authorization controls for Restricted components are not subject to this vulnerability, because in those environments general write permission is already the effective security boundary.

Remediation

Patch, then assume compromise.

Upgrade Apache NiFi to version 2.9.0 or later, as recommended by the advisory. The advisory states that Apache NiFi 2.9.0 removes the implementation of Restricted status authorization from the framework.

PUBLIC EXPLOITS

Exploits

No public exploits tracked yet. Mallory keeps watching.

VALID 0 / 0 TOTALView more in app

No public exploit code observed for this vulnerability.

EXPOSURE SURFACE

Affected products & vendors

Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.

VendorProductType

Apache Software FoundationNifiapplication

Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.

ACTIVITY FEED

Recent activity

9 sources tracked across advisories and community write-ups. News coverage will land here when it surfaces.

9 SOURCESView more in app

No news coverage yet. Advisories and community discussion only.

What this page doesn’t show

The version that knows your environment.

This page is what’s public. Mallory adds the parts that aren’t: which of your assets are affected, which adversaries are exploiting it right now, which detections to deploy, and what to do tonight.

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Exposure mapping

Query your assets running an affected version, and investigate the blast radius.

Threat actor evidence

Every observed campaign linking this CVE to a named adversary.

Associated malware

Malware families riding this exploit, with evidence and IOCs.

Detection signatures

YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.

Vendor-by-vendor mapping

Cross-references every affected SKU, including bundled OEM variants.

Social activity9

Community discussion across Reddit, Mastodon, and other social sources.

EXTERNAL REFERENCES

MITRE CVE

cve.org · CVE-2026-44914

NVD

nvd.nist.gov/vuln/detail/CVE-2026-44914

MITRE CWE · CWE-862

cwe.mitre.org