CVE-2026-63221: CODEIGNITER4

Critical severity, CVSS 9.4. EPSS: 0.6% chance of exploitation in the next 30 days.

CodeIgniter is a PHP full-stack web framework. From 4.3.0 through 4.7.3, Query Builder deleteBatch() substitutes bound values from where() conditions into generated SQL while ignoring their escape flags, allowing user-controlled condition values to be interpreted as SQL. This affects only the deleteBatch() code path. Regular delete() operations escape where() binds correctly. This issue is fixed in version 4.7.4.

Affected products

• CODEIGNITER4 CODEIGNITER4: from 4.3.0, before 4.7.4 (fixed in 4.7.4)

Published 2026-07-31. Last modified 2026-09-08.