CVE-2020-22201Public exploitNetwork attack vector

Authenticated PHP code execution via unfiltered pagesize

Published Jun 16, 2021 · Updated Aug 4, 2024

Code injection in phpCMS 2008 SP4 allows remote authenticated users to execute arbitrary PHP code through yp/product.php. The endpoint passes the unfiltered pagesize value into $urlrules, and template rendering later evaluates the resulting data as PHP. A low-privileged authenticated request is sufficient, and injected PHP can read or write data accessible to the web application's PHP process.

CVSS severity8.8
High
EPSS probability1.47%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Code injection in phpCMS 2008 SP4 allows remote authenticated users to execute arbitrary PHP code through yp/product.php. The endpoint passes the unfiltered pagesize value into $urlrules, and template rendering later evaluates the resulting data as PHP. A low-privileged authenticated request is sufficient, and injected PHP can read or write data accessible to the web application's PHP process.

The record

CVE
CVE-2020-22201
Published
Jun 16, 2021
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-94, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 16, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 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

6.5NIST NVDAV:N/AC:L/Au:S/C:P/I:P/A:P
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.

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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-94Improper Control of Generation of Code ('Code Injection')
T1190Exploit Public-Facing Application

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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