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CVE-2024-4268

MEDIUM 5.4 CVSS 3.1
Published
July 2, 2024
Last modified
June 17, 2026
NVD status
Modified
Reported by
security@wordfence.com
Weakness
CWE-79
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Description

The Ultimate Blocks – WordPress Blocks Plugin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's blocks in all versions up to, and including, 3.1.9 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. CVE-2024-37457 may be a duplicate of this issue.

Affected WordPress components

  • Ultimate Blocks – 25+ Gutenberg Blocks for Block Editor Plugin · ultimate-blocks
    Confirmed match Active
    Up to and including 3.1.9
    View on WordPress.org

A confirmed match is backed by the plugin or theme slug. A possible match is based on the product name only and should be verified.

Affected products and versions

  • ultimateblocks Ultimate Blocks – 25+ Gutenberg Blocks for Block Editor — Up to and including 3.1.9
  • dotcamp ultimate_blocks — Before 3.2.0

References

  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/ultimate-blocks/trunk/src/blocks/advanced-heading/block.php Product
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/ultimate-blocks/trunk/src/blocks/how-to/block.php Product
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/ultimate-blocks/trunk/src/blocks/image-slider/block.php Product
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/ultimate-blocks/trunk/src/blocks/styled-box/block.php Product
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/ultimate-blocks/trunk/src/blocks/testimonial/block.php Product
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/ultimate-blocks/trunk/src/extensions/custom-css/class-custom-css.php?rev=3102541#L173 Product
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/changeset/3075315/ultimate-blocks Patch
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/changeset/3108401/ Patch
  • wordpress.org https://wordpress.org/plugins/ultimate-blocks/#developers Product
  • www.wordfence.com https://www.wordfence.com/threat-intel/vulnerabilities/id/00b60b53-77bf-4640-bf2b-84e011014623?source=cve Third Party Advisory
  • gist.github.com https://gist.github.com/webber-naut/0a8a4f810da286392a43c4614d31712e Broken Link
  • www.dropbox.com https://www.dropbox.com/scl/fi/zh7t1qsvxkxk2dfhwd7nn/Ultimate-Blocks-Stored-XSS_POC_4.20.24.mov?rlkey=ws16dcu7f6mjd3h9emsqev7jm&e=2&st=fdr7q9h7&dl=0 Broken Link
  • nvd.nist.gov Official NVD record