CVE-2022-4802Public exploitNetwork attack vector

Cross-user record creation via client-supplied owner ID

Published Dec 28, 2022 · Updated Apr 10, 2025

Improper authorization in Memos before 0.9.1 allows remote authenticated users to create records under another user's identity. The memo creation handler decoded JSON into a structure whose CreatorID came from the session, allowing a creatorId request key to overwrite that trusted value. Exploitation requires a valid account and permits cross-user data attribution and modification without reported service interruption.

CVSS severity5.4
Medium
EPSS probability0.57%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper authorization in Memos before 0.9.1 allows remote authenticated users to create records under another user's identity. The memo creation handler decoded JSON into a structure whose CreatorID came from the session, allowing a creatorId request key to overwrite that trusted value. Exploitation requires a valid account and permits cross-user data attribution and modification without reported service interruption.

The record

CVE
CVE-2022-4802
Published
Dec 28, 2022
Updated
Apr 10, 2025
Vendor
Memos
Product
Memos
Classifications
CWE-639
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 28, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 10, 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 <0.9.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Memos · Memosversion=unspecified <0.9.1

Published CVSS scores

9.1huntr.devCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/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.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-639Authorization Bypass Through User-Controlled Key

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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