Input validation error in CodeIgniter4 - CVE-2023-32692
Published: May 21, 2023 / Updated: May 23, 2026
Vulnerability identifier: #VU132168
CSH Severity: High
CVSS v4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2023-32692
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary code.
The vulnerability exists due to improper input validation in the Validation library when processing validation placeholders. A remote attacker can supply crafted placeholder input to execute arbitrary code.
Validation methods in controllers and in-model validation are also affected because they use the Validation library internally.
Affected software
CodeIgniter4
How to mitigate CVE-2023-32692
Install security update from vendor's website.
CodeIgniter4 - update to 4.3.5