CVE-2020-20914Public exploitNetwork attack vector

Database compromise via raw SQL interpolation

Published Apr 4, 2023 · Updated Feb 14, 2025

SQL injection in PublicCMS 4.0 allows remote authenticated users to read, modify, or delete database data through the sql parameter. SysSiteAdminController.execSql passes the parameter to MyBatis SqlMapper statements that interpolate it directly rather than bind it, allowing attacker-controlled SQL to execute. The demonstrated request requires an administrative session and CSRF token; database dumping is proven, while arbitrary code execution is reported but not demonstrated.

CVSS severity9.8
Critical
EPSS probability1.14%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SQL injection in PublicCMS 4.0 allows remote authenticated users to read, modify, or delete database data through the sql parameter. SysSiteAdminController.execSql passes the parameter to MyBatis SqlMapper statements that interpolate it directly rather than bind it, allowing attacker-controlled SQL to execute. The demonstrated request requires an administrative session and CSRF token; database dumping is proven, while arbitrary code execution is reported but not demonstrated.

The record

CVE
CVE-2020-20914
Published
Apr 4, 2023
Updated
Feb 14, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-89
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Apr 4, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 14, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-89Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')

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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