CVE-2023-5135

medium

Description

The Simple Cloudflare Turnstile plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'gravity-simple-turnstile' shortcode in versions up to, and including, 1.23.1 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers with contributor-level and above permissions to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

References

https://www.wordfence.com/threat-intel/vulnerabilities/id/91f6c9d3-641d-42f7-bf11-e3c3a44eeb76?source=cve

https://plugins.trac.wordpress.org/changeset/2970368/simple-cloudflare-turnstile#file1

https://plugins.trac.wordpress.org/browser/simple-cloudflare-turnstile/tags/1.23.0/simple-cloudflare-turnstile.php#L72

https://plugins.trac.wordpress.org/browser/simple-cloudflare-turnstile/tags/1.23.0/inc/integrations/forms/gravity-forms.php#L23

https://plugins.trac.wordpress.org/browser/simple-cloudflare-turnstile/tags/1.23.0/inc/integrations/forms/gravity-forms.php#L14

Details

Source: Mitre, NVD

Published: 2023-09-27

Updated: 2026-06-17

Risk Information

CVSS v2

Base Score: 5.5

Vector: CVSS2#AV:N/AC:L/Au:S/C:P/I:P/A:N

Severity: Medium

CVSS v3

Base Score: 5.4

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

Severity: Medium

EPSS

EPSS: 0.00166