Administrative lockout via self-archiving host account
Published Dec 30, 2022 · Updated Apr 9, 2025
Denial of service in Memos before 0.9.1 allows remote authenticated users with host privileges to lock out the instance via the user API. The user-update handler accepts an archived row status for the active host account without preserving an accessible host, while authentication rejects archived accounts. Host-level access is required, and the demonstrated consequence is loss of administrative access rather than data disclosure.
Summary
What happened
Denial of service in Memos before 0.9.1 allows remote authenticated users with host privileges to lock out the instance via the user API. The user-update handler accepts an archived row status for the active host account without preserving an accessible host, while authentication rejects archived accounts. Host-level access is required, and the demonstrated consequence is loss of administrative access rather than data disclosure.
The record
- CVE
- CVE-2022-4863
- Published
- Dec 30, 2022
- Updated
- Apr 9, 2025
- Vendor
- Memos
- Product
- Memos
- Classifications
- CWE-280, T1531
- Attack vector
- network
- Privileges
- admin
Timeline
How it unfolded
- Dec 30, 2022CVE publishedPublication date reported by the CVE source.
- Apr 9, 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=unspecified <0.9.1
What conditions does exploitation require?
What is affected?
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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