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High, CVSS 7.5amended

Flask-AppBuilder Has No Rate Limiting on Login AUTH DB

CVE-2023-29005GHSA-9hcr-9hcv-x6pv

What to do

Vendor fix available. Upgrade each affected package to the fixed version on its release line (flask-appbuilder 4.3.0), redeploy, then verify what is actually installed.

This page has no inventory attached, so it cannot say whether you are affected. A vendor fix is not proof that your deployment is fixed.

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Affected packages

Sources

Severity and exploitation
Exploitation
No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.
CVSS
7.5 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
EPSS
  • CVE-2023-29005: 0.63% estimated exploitation activity in the next 30 days; percentile 50.20 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.
Source description

As published by the source; long descriptions are shortened.

Impact Lack of rate limiting will allow an attacker to brute-force user credentials. Patches Ability to enable rate limiting on Flask-AppBuilder = 4.3.0. Use AUTHRATELIMITED = True and RATELIMITENABLED = True set the limit itself by using AUTHRATELIMIT. Will apply only to database authentication. Workarounds Implement rate limiting using a reverse proxy or other strategies.

Dates and revisions
Published by the source
Last modified by the source
Source last checked
  1. Revision 2 · amended ·

    Amended from ghsa record GHSA-9hcr-9hcv-x6pv

  2. Revision 1 · created ·

    Published from osv record GHSA-9hcr-9hcv-x6pv

Agent brief

Preview the exact text before you copy it. Commands are read-only suggestions; review them before running anything.

# Patch Next advisory brief: CVE-2023-29005

Advisory: Flask-AppBuilder Has No Rate Limiting on Login AUTH DB
IDs: CVE-2023-29005, GHSA-9hcr-9hcv-x6pv
Record: https://patchnext.com/advisories/cve-2023-29005 (revision 2, source checked 26 Oct 2026, 13:31 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: High (CVSS 7.5)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: flask-appbuilder 4.3.0. A vendor fix does not mean a deployment is fixed.

## Affected components
- PyPI flask-appbuilder: affected < 4.3.0; fixed in 4.3.0

## Suggested inspection (read-only)
- `python -m pip show flask-appbuilder`: prints the installed version. Run with the environment that serves production active.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on flask-appbuilder.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://osv.dev/vulnerability/GHSA-9hcr-9hcv-x6pv (OSV record GHSA-9hcr-9hcv-x6pv lists affected ranges: PyPI flask-appbuilder >=0 <4.3.0 (fixed))
- Verified: https://github.com/advisories/GHSA-9hcr-9hcv-x6pv (GitHub-reviewed advisory GHSA-9hcr-9hcv-x6pv lists affected ranges: PyPI flask-appbuilder >=0 <4.3.0)

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