Unauthenticated SQL injection via unescaped JSON identifier
Published Feb 3, 2023 · Updated Mar 26, 2025
SQL injection in jocms 0.8 allows remote attackers to execute arbitrary SQL commands and read sensitive data through a crafted JSON request. The jo_json_check() function decodes the POST body and passes its id value to jo_get_masks(), which concatenates it unescaped into a SELECT WHERE clause. No authentication or user interaction is required, and successful exploitation exposes or alters data stored in the SQLite database.
Summary
What happened
SQL injection in jocms 0.8 allows remote attackers to execute arbitrary SQL commands and read sensitive data through a crafted JSON request. The jo_json_check() function decodes the POST body and passes its id value to jo_get_masks(), which concatenates it unescaped into a SELECT WHERE clause. No authentication or user interaction is required, and successful exploitation exposes or alters data stored in the SQLite database.
The record
- CVE
- CVE-2021-36431
- 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
- Feb 3, 2023CVE publishedPublication date reported by the CVE source.
- 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?
What conditions does exploitation require?
What is affected?
Affected products and versions are unavailable in this record.
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.
Weakness, pattern, technique
Public exploit references
- UNION-query JSON proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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