CVE-2022-23889Public exploitNetwork attack vector

Bulk comment creation via concurrent request replay

Published Jan 28, 2022 · Updated Aug 3, 2024

Concurrency weakness in YzmCMS 6.3 allows remote authenticated users to create unusually large numbers of comments by replaying requests. The front-end comment function accepts each repeated captured submission as a separate comment without an effective concurrency control. A valid account and an initial article-comment request are required; the demonstrated consequence is bulk creation of malicious comments, not a reported service interruption.

CVSS severity5.3
Medium
EPSS probability1.08%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Concurrency weakness in YzmCMS 6.3 allows remote authenticated users to create unusually large numbers of comments by replaying requests. The front-end comment function accepts each repeated captured submission as a separate comment without an effective concurrency control. A valid account and an initial article-comment request are required; the demonstrated consequence is bulk creation of malicious comments, not a reported service interruption.

The record

CVE
CVE-2022-23889
Published
Jan 28, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-674
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 28, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
5.0NIST NVDAV:N/AC:L/Au:N/C:N/I:P/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 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-674Uncontrolled Recursion

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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