Authenticated hash disclosure via user filters
Published Aug 1, 2022 · Updated Apr 23, 2025
Information disclosure in Flask-AppBuilder before 4.1.3 allows remote authenticated users to infer partial password hashes through crafted user filters. The UserStatsChartView reused user search columns that exposed salted password-hash fields to partial-match queries, allowing matching users and hash fragments to be inferred without returning complete hashes. Exploitation requires an authenticated Admin account and the AUTH_DB database-authentication configuration; the consequence is sensitive password-hash disclosure.
Summary
What happened
Information disclosure in Flask-AppBuilder before 4.1.3 allows remote authenticated users to infer partial password hashes through crafted user filters. The UserStatsChartView reused user search columns that exposed salted password-hash fields to partial-match queries, allowing matching users and hash fragments to be inferred without returning complete hashes. Exploitation requires an authenticated Admin account and the AUTH_DB database-authentication configuration; the consequence is sensitive password-hash disclosure.
The record
- CVE
- CVE-2022-31177
- Published
- Aug 1, 2022
- Updated
- Apr 23, 2025
- Vendor
- dpgaspar
- Product
- Flask-AppBuilder
- Classifications
- CWE-202, T1087
- Attack vector
- network
- Privileges
- admin
Timeline
How it unfolded
- Aug 1, 2022CVE publishedPublication date reported by the CVE source.
- Apr 23, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
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- Affected versionversion=< 4.1.3
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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