What’s Vulnerable › Vulnerabilities

CVE-2023-23995: WordPress TinyMCE Custom Styles Plugin <= 1.1.2 is vulnerable to Cross Site Scripting (XSS)

• Severity: medium (CVSS 4.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-04-25 · updated 2026-06-17
• Weakness: CWE-79

Description

Auth. (admin+) Stored Cross-Site Scripting (XSS) vulnerability in Tim Reeves & David Stöckl TinyMCE Custom Styles plugin <= 1.1.2 versions.

Affected products

• TinyMCE Custom Styles: before 1.1.3 — fixed in 1.1.3

How to fix

Upgrade to a fixed version: TinyMCE Custom Styles 1.1.3. Check the vendor advisory for mitigations.

References

• https://patchstack.com/database/vulnerability/tinymce-custom-styles/wordpress-tinymce-custom-styles-plugin-1-1-2-cross-site-scripting-xss-vulnerability?_s_id=cve
• https://patchstack.com/database/vulnerability/tinymce-custom-styles/wordpress-tinymce-custom-styles-plugin-1-1-2-cross-site-scripting-xss-vulnerability?_s_id=cve

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