Cross-account balance modification via unscoped account lookup
Published Jan 19, 2026 · Updated Jan 19, 2026
Authorization bypass in Whisper Money before 0.1.5 allows remote authenticated users to alter balances in other users' bank accounts. The sync/balances request validator checked only whether a supplied account_id existed, without restricting the lookup to the authenticated user's user_id. Any authenticated account could therefore write balance records against another user's account identifier, corrupting that user's financial data.
Summary
What happened
Authorization bypass in Whisper Money before 0.1.5 allows remote authenticated users to alter balances in other users' bank accounts. The sync/balances request validator checked only whether a supplied account_id existed, without restricting the lookup to the authenticated user's user_id. Any authenticated account could therefore write balance records against another user's account identifier, corrupting that user's financial data.
The record
- CVE
- CVE-2026-23844
- Published
- Jan 19, 2026
- Updated
- Jan 19, 2026
- Vendor
- Whisper Money
- Product
- Whisper Money
- Classifications
- CWE-488, CWE-639, T1565
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Jan 19, 2026CVE publishedPublication date reported by the CVE source.
- Jan 19, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=< 0.1.5
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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