# CVE-2019-12421: Apache NiFi user log out issue

Source: https://junglewise.ai/threats/cve-2019-12421-apache-nifi-user-log-out-issue  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2019-12-02  
License: CC BY 4.0 with a link back

CVE-2019-12421 · Severity: low · CVSS 3.1 · Published 2019-12-02

Apache NiFi user log out issue

Technologies: [org.apache.nifi:nifi-web-api (Maven)](https://junglewise.ai/threats/technologies/org-apache-nifi-nifi-web-api). Vendors: [Maven](https://junglewise.ai/threats/vendors/maven).

## Quick answers

**Is CVE-2019-12421 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2019-12421 being exploited in the wild.

**How severe is CVE-2019-12421?** Low severity, with a CVSS score of 3.1, published 2 December 2019.

**Which products and versions are affected?** org.apache.nifi:nifi-web-api (Maven) ECOSYSTEM:introduced=1.3.0,fixed=1.10.0; org.apache.nifi:nifi-web-security (Maven) ECOSYSTEM:introduced=1.3.0,fixed=1.10.0.

**Is there a fix for CVE-2019-12421?** Yes. org.apache.nifi:nifi-web-api (Maven): upgrade to 1.10.0 or later; org.apache.nifi:nifi-web-security (Maven): upgrade to 1.10.0 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected by CVE-2019-12421?** Check whether you run org.apache.nifi:nifi-web-api (Maven) or org.apache.nifi:nifi-web-security (Maven) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- org.apache.nifi:nifi-web-api (Maven): upgrade to 1.10.0 or later

  ```sh
  # set org.apache.nifi:nifi-web-api to 1.10.0 in your pom.xml or build.gradle
  ```

- org.apache.nifi:nifi-web-security (Maven): upgrade to 1.10.0 or later

  ```sh
  # set org.apache.nifi:nifi-web-security to 1.10.0 in your pom.xml or build.gradle
  ```


## Affected products

- org.apache.nifi:nifi-web-api (Maven) ECOSYSTEM:introduced=1.3.0,fixed=1.10.0
- org.apache.nifi:nifi-web-security (Maven) ECOSYSTEM:introduced=1.3.0,fixed=1.10.0

## Identifiers

- CVE-2019-12421
- GHSA-fmqw-vqh5-cwq9

## Related threats

- [Apache NiFi missing authorization in Process Group replacement](https://junglewise.ai/threats/cve-2026-44914-apache-nifi-missing-authorization-in-process-group-replacement)
- [Apache NiFi incorrect authorization in component configuration verification](https://junglewise.ai/threats/cve-2026-44911-apache-nifi-incorrect-authorization-in-component-configuration)
- [Apache NiFi: Missing Authorization of Restricted Permissions for Component Updates](https://junglewise.ai/threats/cve-2026-25903-apache-nifi-missing-authorization-of-restricted-permissions-for)
- [Apache NiFi: Missing Complete Authorization for Parameter and Service References](https://junglewise.ai/threats/cve-2024-56512-apache-nifi-missing-complete-authorization-for-parameter-and)
- [Apache NiFi process group information disclosure](https://junglewise.ai/threats/cve-2019-10083-apache-nifi-process-group-information-disclosure)