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CVE-2024-37457: WordPress Ultimate Blocks – WordPress Blocks Plugin plugin <= 3.1.9 - Cross Site Scripting (XSS) vulnerability

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-07-21 · updated 2026-06-17
• Weakness: CWE-79

Description

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Ultimate Blocks Ultimate Blocks – Gutenberg Blocks Plugin allows Stored XSS.This issue affects Ultimate Blocks – Gutenberg Blocks Plugin: from n/a through 3.1.9.

Affected products

• ultimateblocks Ultimate Blocks – 25+ Gutenberg Blocks for Block Editor: before 3.2.0 — fixed in 3.2.0

How to fix

Upgrade to a fixed version: ultimateblocks Ultimate Blocks – 25+ Gutenberg Blocks for Block Editor 3.2.0. Check the vendor advisory for mitigations.

References

• https://patchstack.com/database/vulnerability/ultimate-blocks/wordpress-ultimate-blocks-wordpress-blocks-plugin-plugin-3-1-9-cross-site-scripting-xss-vulnerability?_s_id=cve
• https://patchstack.com/database/vulnerability/ultimate-blocks/wordpress-ultimate-blocks-wordpress-blocks-plugin-plugin-3-1-9-cross-site-scripting-xss-vulnerability?_s_id=cve

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