# CVE-2023-34110: Flask-AppBuilder vulnerable to possible disclosure of sensitive information on user error

Source: https://junglewise.ai/threats/cve-2023-34110-flask-appbuilder-vulnerable-to-possible-disclosure-of-sensitive  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2023-06-22  
License: CC BY 4.0 with a link back

CVE-2023-34110 · Severity: low · CVSS 3.1 · Published 2023-06-22

Flask-AppBuilder is an application development framework, built on top of Flask. Prior to version 4.3.2, an authenticated malicious actor with Admin privileges, could by adding a special character on the add, edit User forms trigger a database error, this error is surfaced back to this actor on the UI. On certain database engines this error can include the entire user row including the pbkdf2:sha256 hashed password. This vulnerability has been fixed in version 4.3.2.

Technologies: [flask-appbuilder (PyPI)](https://junglewise.ai/threats/technologies/flask-appbuilder). Vendors: [PyPI](https://junglewise.ai/threats/vendors/pypi).

## Quick answers

**Is CVE-2023-34110 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2023-34110 being exploited in the wild.

**How severe is CVE-2023-34110?** Low severity, with a CVSS score of 3.1, published 22 June 2023.

**Which products and versions are affected?** flask-appbuilder (PyPI) ECOSYSTEM:introduced=0,fixed=4.3.2, GIT:introduced=0,fixed=ae25ad4c87a9051ebe4a4e8f02aee73232642626|ECOSYSTEM:introduced=0,fixed=4.3.2.

**Is there a fix for CVE-2023-34110?** Yes. flask-appbuilder (PyPI): upgrade to 4.3.2 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected by CVE-2023-34110?** Check whether you run flask-appbuilder (PyPI) 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

- flask-appbuilder (PyPI): upgrade to 4.3.2 or later

  ```sh
  pip install "flask-appbuilder>=4.3.2"
  ```


## Affected products

- flask-appbuilder (PyPI) ECOSYSTEM:introduced=0,fixed=4.3.2, GIT:introduced=0,fixed=ae25ad4c87a9051ebe4a4e8f02aee73232642626|ECOSYSTEM:introduced=0,fixed=4.3.2

## Identifiers

- CVE-2023-34110
- GHSA-jhpr-j7cq-3jp3
- PYSEC-2023-94

## Related threats

- [PYSEC-2026-1378 - Flask App Builder has an Authentication Bypass vulnerability when using non AUTH_DB methods](https://junglewise.ai/threats/cve-2025-58065-flask-app-builder-has-an-authentication-bypass-vulnerability-when)
- [PYSEC-2026-1379 - Flask-AppBuilder open redirect vulnerability using HTTP host injection](https://junglewise.ai/threats/cve-2025-32962-flask-appbuilder-open-redirect-vulnerability-using-http-host)
- [PYSEC-2026-1382 - Flask-AppBuilder's login form allows browser to cache sensitive fields](https://junglewise.ai/threats/cve-2024-45314-flask-appbuilder-s-login-form-allows-browser-to-cache-sensitive)
- [PYSEC-2026-1381 - Flask-AppBuilder's OAuth login page subject to Cross Site Scripting (XSS)](https://junglewise.ai/threats/cve-2024-27083-flask-appbuilder-s-oauth-login-page-subject-to-cross-site)
- [PYSEC-2026-1380 - Flask-AppBuilder Has No Rate Limiting on Login AUTH DB](https://junglewise.ai/threats/cve-2023-29005-flask-appbuilder-has-no-rate-limiting-on-login-auth-db)