CVE-2021-36434Public exploitNetwork attack vector

Database disclosure and modification via raw SQL queries

Published Feb 3, 2023 · Updated Mar 26, 2025

SQL injection in jocms 0.8 allows remote attackers to read and alter database data through unauthenticated JSON requests. The jo_get_masks function concatenates the user-controlled id or content value returned by jo_json_check into a raw SQLite query without filtering. Network access to the affected PHP endpoints is sufficient; crafted UNION queries disclose database contents, and stacked statements can alter data or create a PHP file.

CVSS severity9.1
Critical
EPSS probability0.86%
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 jocms 0.8 allows remote attackers to read and alter database data through unauthenticated JSON requests. The jo_get_masks function concatenates the user-controlled id or content value returned by jo_json_check into a raw SQLite query without filtering. Network access to the affected PHP endpoints is sufficient; crafted UNION queries disclose database contents, and stacked statements can alter data or create a PHP file.

The record

CVE
CVE-2021-36434
Published
Feb 3, 2023
Updated
Mar 26, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-89, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 3, 2023CVE publishedPublication date reported by the CVE source.
  2. Mar 26, 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 privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.1CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
9.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

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