Authenticated memo deletion via cache-bypassed 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 other users' public or private memos. The delete route asks FindMemo to match both memo ID and creator ID, but FindMemo returns an ID-keyed cache hit without applying the creator filter. A signed-in attacker who selects a cached memo ID can therefore pass the ownership check and permanently delete another user's memo.
Summary
What happened
Improper access control in Memos 0.9.0 and earlier allows remote authenticated users to delete other users' public or private memos. The delete route asks FindMemo to match both memo ID and creator ID, but FindMemo returns an ID-keyed cache hit without applying the creator filter. A signed-in attacker who selects a cached memo ID can therefore pass the ownership check and permanently delete another user's memo.
The record
- CVE
- CVE-2022-4806
- Published
- Dec 28, 2022
- Updated
- Apr 10, 2025
- Vendor
- Memos
- Product
- Memos
- Classifications
- CWE-284, CWE-639, 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?
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
- huntr.dev memo-deletion proof of conceptproof of concept · unverified
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