CVE-2022-21715

Name: CVE-2022-21715
Creator: NVD / NIST
Published: 2022-01-24T20:15:08.713+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 1.00%

Last modified Jun 17, 2026

CVE-2022-21715 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. CodeIgniter4 is the 4.x branch of CodeIgniter, a PHP full-stack web framework. A cross-site scripting (XSS) vulnerability was found in `API\ResponseTrait` in Codeigniter4 prior to version 4.1.8. EPSS estimates a 1.00% chance of exploitation in the next 30 days.

Description

CodeIgniter4 is the 4.x branch of CodeIgniter, a PHP full-stack web framework. A cross-site scripting (XSS) vulnerability was found in `API\ResponseTrait` in Codeigniter4 prior to version 4.1.8. Attackers can do XSS attacks if a potential victim is using `API\ResponseTrait`. Version 4.1.8 contains a patch for this vulnerability. There are two potential workarounds available. Users may avoid using `API\ResponseTrait` or `ResourceController` Users may also disable Auto Route and use defined routes only.

Metrics

CVSS 3.1

6.1/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS Probability

1.00%

58.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Codeigniter	Codeigniter	>= 4.0.0, < 4.1.8

References

https://codeigniter4.github.io/userguide/incoming/routing.html#use-defined-routes-onlyMitigation, Vendor Advisory
https://github.com/codeigniter4/CodeIgniter4/commit/70d881cf5322b7c32e69516aebd2273ac6a1e8ddPatch, Third Party Advisory
https://github.com/codeigniter4/CodeIgniter4/security/advisories/GHSA-7528-7jg5-6g62Mitigation, Third Party Advisory
https://codeigniter4.github.io/userguide/incoming/routing.html#use-defined-routes-onlyMitigation, Vendor Advisory
https://github.com/codeigniter4/CodeIgniter4/commit/70d881cf5322b7c32e69516aebd2273ac6a1e8ddPatch, Third Party Advisory
https://github.com/codeigniter4/CodeIgniter4/security/advisories/GHSA-7528-7jg5-6g62Mitigation, Third Party Advisory

Timeline

Published: Jan 24, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-21715?

How severe is CVE-2022-21715?

CVE-2022-21715 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 1.00% probability of exploitation in the next 30 days.

How do I fix CVE-2022-21715?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-21715?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST