CVE-2022-4354Public exploitNetwork attack vector

Stored script execution via crafted comments

Published Dec 8, 2022 · Updated Apr 15, 2025

Stored cross-site scripting in LinZhaoguan pb-cms 2.0 allows remote attackers to run script in a visitor's browser through comments. The public record identifies the /blog/comment Message Board endpoint but does not disclose the affected parameter or encoding failure. A victim must view the malicious comment; script execution is limited to the victim's pb-cms browser context.

CVSS severity9.6
Critical
EPSS probability0.54%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored cross-site scripting in LinZhaoguan pb-cms 2.0 allows remote attackers to run script in a visitor's browser through comments. The public record identifies the /blog/comment Message Board endpoint but does not disclose the affected parameter or encoding failure. A victim must view the malicious comment; script execution is limited to the victim's pb-cms browser context.

The record

CVE
CVE-2022-4354
Published
Dec 8, 2022
Updated
Apr 15, 2025
Vendor
LinZhaoguan
Product
pb-cms
Classifications
CWE-79, CWE-707, T1059.007
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 8, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 15, 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=2.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

LinZhaoguan · pb-cmsversion=2.0

Published CVSS scores

4.3VulDBCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
9.6NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-707Improper Neutralization
T1059.007Command and Scripting Interpreter: JavaScript

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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