Unrated

Authorization bypass for Restricted components during Apache NiFi Process Group replacement

IdentifiersCVE-2026-44914CWE-862

CVE-2026-44914 affects Apache NiFi versions 1.12.0 through 2.9.0. The vulnerability is caused by missing authorization checks when handling requests to replace Process Groups that include extension components whose use is governed by NiFi’s Restricted annotation. Although the Restricted annotation is intended to require additional privileges for certain components, the framework did not verify restricted-status authorization during Process Group replacement operations. As a result, a user with general write access could introduce Restricted components through the replace Process Group workflow without the intended additional authorization enforcement.

For your environment

Are you exposed to this one?

Mallory correlates every CVE against your assets, your vendors, and active adversary campaigns. Know which vulnerabilities matter for you, not just which ones are loud.

Start free trial

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.

In affected Apache NiFi deployments that implement separate authorization controls for Restricted components, the flaw allows a user who already has general write access to bypass the additional Restricted-component permission model. This can result in unauthorized addition of privileged or sensitive extension components to a flow, weakening administrative security boundaries and potentially enabling misuse of components that are supposed to require elevated authorization.

Mitigation

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

If immediate upgrade is not possible, limit Process Group replacement capability to highly trusted users and review whether users with general write access can import or replace Process Groups containing Restricted components. Monitor and audit flow changes for unauthorized introduction of Restricted extensions. Note that deployments that do not implement separate authorization for Restricted components are stated not to be subject to this vulnerability, because write permission is already the effective security boundary.

Remediation

Patch, then assume compromise.

Upgrade Apache NiFi to version 2.9.0 as recommended by the advisory. The project states that version 2.9.0 removes the implementation of Restricted status authorization from the framework, addressing the vulnerable authorization behavior during Process Group replacement.

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.

ACTIVITY FEED

Recent activity

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

8 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.

Start free trial

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 activity8

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