SQL Injection Vulnerability in CodeIgniter 4 Web Framework
CVE-2026-63221

9.4CRITICAL

Key Information:

Vendor

Codeigniter4

Status
Codeigniter4
Vendor
CVE Published:
31 July 2026

What is CVE-2026-63221?

The CodeIgniter framework versions 4.3.0 through 4.7.3 are susceptible to an SQL injection vulnerability specifically related to the deleteBatch() function in the Query Builder. This vulnerability permits user-controlled condition values to be misinterpreted as SQL commands due to improper handling of bound values, compromising the security of web applications built with this framework. Regular delete operations are unaffected, as they appropriately escape the where() bindings. Users are encouraged to upgrade to version 4.7.4, where this issue has been addressed.

Affected Version(s)

CodeIgniter4 >= 4.3.0, < 4.7.4

References

https://github.com/codeigniter4/CodeIgniter4/security/adv...
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https://github.com/codeigniter4/CodeIgniter4/commit/f5e46...
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https://github.com/codeigniter4/CodeIgniter4/releases/tag...
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CVSS V3.1

Score:
9.4
Severity:
CRITICAL
Confidentiality:
Low
Integrity:
High
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.