CVE-2022-4684Public exploitNetwork attack vector

Cross-user memo modification via request-body ID override

Published Dec 23, 2022 · Updated Apr 9, 2025

Improper access control in Memos before 0.9.0 allows remote authenticated users to edit private memos owned by other users. MemoPatch decodes the request-body ID and uses that value for the update, allowing it to override the memo identifier selected by the route. Any signed-in user who obtains another memo ID can alter that memo's stored content; the public record does not show unauthenticated access.

CVSS severity8.8
High
EPSS probability0.61%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper access control in Memos before 0.9.0 allows remote authenticated users to edit private memos owned by other users. MemoPatch decodes the request-body ID and uses that value for the update, allowing it to override the memo identifier selected by the route. Any signed-in user who obtains another memo ID can alter that memo's stored content; the public record does not show unauthenticated access.

The record

CVE
CVE-2022-4684
Published
Dec 23, 2022
Updated
Apr 9, 2025
Vendor
Memos
Product
Memos
Classifications
CWE-284, T1565.001
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

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.

  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

7.6huntr.devCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L
8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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-284Improper Access Control
T1565.001Stored Data 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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