What is CVE-2026-63221?

CVE-2026-63221 is a critical-severity vulnerability in Codeigniter4, classified under SQL Injection. CVSS score: 9.4/10. Published 2026-07-31.

How severe is CVE-2026-63221?

Critical severity. CVSS v3 base score is 9.4 out of 10.

SQL Injection in Codeigniter4

CVE-2026-63221

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…

Vulnerability class: SQL Injection

CVSS v3 metric

CVSS v3 base score 9.4 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H.

Affected products

Codeigniter4 — versions >= 4.3.0, < 4.7.4

Weakness classification (CWE)

CWE-89 — SQL Injection

References

security-advisories@github.com (x_refsource_CONFIRM)
security-advisories@github.com (x_refsource_MISC)
security-advisories@github.com (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-63221?: CVE-2026-63221 is a critical-severity vulnerability in Codeigniter4, classified under SQL Injection. CVSS score: 9.4/10. Published 2026-07-31.
How severe is CVE-2026-63221?: Critical severity. CVSS v3 base score is 9.4 out of 10.