Authenticated note deletion via missing ownership check
Published Dec 28, 2022 · Updated Apr 10, 2025
Improper access control in Memos 0.9.0 and earlier allows remote authenticated users to delete any user's notes through the memo API. The DELETE /api/memo/:id handler accepts an arbitrary memo identifier without verifying that the signed-in user owns the targeted memo. Any account with login permission can erase notes across the instance, causing permanent user-data loss.
Summary
What happened
Improper access control in Memos 0.9.0 and earlier allows remote authenticated users to delete any user's notes through the memo API. The DELETE /api/memo/:id handler accepts an arbitrary memo identifier without verifying that the signed-in user owns the targeted memo. Any account with login permission can erase notes across the instance, causing permanent user-data loss.
The record
- CVE
- CVE-2022-4796
- Published
- Dec 28, 2022
- Updated
- Apr 10, 2025
- Vendor
- Memos
- Product
- Memos
- Classifications
- CWE-648, T1485
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Dec 28, 2022CVE publishedPublication date reported by the CVE source.
- Apr 10, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- 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.
Public exploit references
- Authenticated arbitrary-note DELETE requestproof of concept · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
Check the software in your environment
Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.
Book a demo