CVE-2022-4687Public exploitNetwork attack vector

Authenticated cross-account modification via body-supplied identifiers

Published Dec 23, 2022 · Updated Apr 9, 2025

Improper privilege management in Memos before 0.9.0 allows remote authenticated users to read or modify other users' records. PATCH handlers verify ownership using the URL identifier, then JSON-decode a body-supplied ID over the checked value before updating memos, resources, shortcuts, or users. Any signed-in user can redirect an authorized update to another record, exposing or altering data without interrupting service.

CVSS severity8.1
High
EPSS probability0.63%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper privilege management in Memos before 0.9.0 allows remote authenticated users to read or modify other users' records. PATCH handlers verify ownership using the URL identifier, then JSON-decode a body-supplied ID over the checked value before updating memos, resources, shortcuts, or users. Any signed-in user can redirect an authorized update to another record, exposing or altering data without interrupting service.

The record

CVE
CVE-2022-4687
Published
Dec 23, 2022
Updated
Apr 9, 2025
Vendor
Memos
Product
Memos
Classifications
CWE-269, CWE-648, T1565
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 23, 2022CVE publishedPublication date reported by the CVE source.
  2. 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=unspecified <0.9.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Memos · Memosversion=unspecified <0.9.0

Published CVSS scores

8.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
8.1huntr.devCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-269Improper Privilege Management
CWE-648Incorrect Use of Privileged APIs
T1565Data Manipulation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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