Possible to infer sensitive information through query strings in Flask-AppBuilder
Key facts
- Attack vector
- Network
- Privileges required
- High
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- Low · None · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-200.
Summary
Flask-AppBuilder is an application development framework built on top of Flask python framework. In versions prior to 4.1.3 an authenticated Admin user could query other users by their salted and hashed passwords strings. These filters could be made by using partial hashed password strings. The response would not include the hashed passwords, but an attacker could infer partial password hashes and their respective users. This issue has been fixed in version 4.1.3. Users are advised to upgrade. There are no known workarounds for this issue.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| dpgaspar | Flask-AppBuilder | before 4.1.3 | 4.1.3 | Patch available | CNA |
| — | Flask-AppBuilder (PyPI) | before 4.1.3 | 4.1.3 | Patch available | GHSA-32ff-4g79-vgfc |
- Flask-AppBuilder Vendordpgaspar Affected before 4.1.3 Fixed in 4.1.3 Patch available CNA
- Flask-AppBuilder (PyPI) Vendor— Affected before 4.1.3 Fixed in 4.1.3 Patch available GHSA-32ff-4g79-vgfc
Remediation
- Fix · CNA Flask-AppBuilder (dpgaspar) Fixed in 4.1.3
- Fix · GHSA-32ff-4g79-vgfc Flask-AppBuilder (PyPI) Fixed in 4.1.3 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2022-31177
- 2026-10-03 Alias added: GHSA-32ff-4g79-vgfc
References
Advisory 3
More dpgaspar Flask-appbuilder vulnerabilities
- TI-2024-17946 Flask-AppBuilder's OAuth login page subject to Cross Site Scripting (XSS) CVSS 3.1MEDIUM 6.1
- TI-2024-16581 Flask-AppBuilder incorrect authentication when using auth type OpenID CVSS 3.1CRITICAL 9.1
- TI-2021-18097 Improper Authentication in Flask-AppBuilder CVSS 3.1HIGH 8.8
- TI-2023-13466 No Rate Limiting on Login AUTH DB CVSS 3.1HIGH 7.5
- TI-2021-12470 URL Redirection to Untrusted Site ('Open Redirect') in Flask-AppBuilder CVSS 3.1HIGH 7.2
- TI-2022-06037 Observable Response Discrepancy in Flask-AppBuilder CVSS 3.1MEDIUM 5.3
Sources
- CVE-2022-31177 · CVE Program
- CVE-2022-31177 · NVD
- FIRST EPSS
- GHSA-32ff-4g79-vgfc · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences