Ultimate Blocks – WordPress Blocks Plugin <= 3.1.9 - Authenticated(Contributor+) Stored Cross-Site Scripting via Multiple Blocks
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6.4epss 0.5%
exploitation probability
0.5%top 60% of all CVEs
observed exploitation
nono source reports it
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.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
References
https://gist.github.com/webber-naut/0a8a4f810da286392a43c4614d31712ehttps://plugins.trac.wordpress.org/browser/ultimate-blocks/trunk/src/blocks/advanced-heading/block.phphttps://plugins.trac.wordpress.org/browser/ultimate-blocks/trunk/src/blocks/how-to/block.phphttps://plugins.trac.wordpress.org/browser/ultimate-blocks/trunk/src/blocks/image-slider/block.phphttps://plugins.trac.wordpress.org/browser/ultimate-blocks/trunk/src/blocks/styled-box/block.phphttps://plugins.trac.wordpress.org/browser/ultimate-blocks/trunk/src/blocks/testimonial/block.phphttps://plugins.trac.wordpress.org/browser/ultimate-blocks/trunk/src/extensions/custom-css/class-custom-css.php?rev=3102541#L173https://plugins.trac.wordpress.org/changeset/3075315/ultimate-blockshttps://plugins.trac.wordpress.org/changeset/3108401/https://wordpress.org/plugins/ultimate-blocks/#developershttps://www.dropbox.com/scl/fi/zh7t1qsvxkxk2dfhwd7nn/Ultimate-Blocks-Stored-XSS_POC_4.20.24.mov?rlkey=ws16dcu7f6mjd3h9emsqev7jm&e=2&st=fdr7q9h7&dl=0https://www.wordfence.com/threat-intel/vulnerabilities/id/00b60b53-77bf-4640-bf2b-84e011014623?source=cve