EUVD-2025-17217Severity by source
AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L
AV:N, AC:L, PR:L, UI:R, S:C, C:L/I:L/A:L
Primary rating from NVD.
CVSS VectorNVD
Lifecycle Timeline
3DescriptionCVE.org
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Stiofan BlockStrap Page Builder - Bootstrap Blocks allows Stored XSS. This issue affects BlockStrap Page Builder - Bootstrap Blocks: from n/a through 0.1.36.
AnalysisAI
Stored cross-site scripting in BlockStrap Page Builder - Bootstrap Blocks plugin for WordPress allows authenticated attackers with contributor-level access or higher to inject arbitrary web scripts into pages. These scripts execute when other users view the affected pages, potentially leading to session hijacking or defacement. No public exploit or active exploitation has been identified at this time.
Technical ContextAI
The vulnerability is a stored cross-site scripting (XSS) flaw in the BlockStrap Page Builder plugin, which provides Bootstrap-based blocks for the WordPress block editor. The plugin fails to sanitize user-supplied input before storing it in the database, allowing malicious scripts to be embedded in page content. When the page is rendered, the script executes in the context of the victim's browser. The CWE-79 classification indicates improper neutralization of input during web page generation. The affected product is a WordPress plugin, as indicated by the CPE-like reference in the advisory.
RemediationAI
Upgrade the BlockStrap Page Builder - Bootstrap Blocks plugin to version 0.1.37 or later, as per the vendor advisory. No workarounds are documented; however, as a compensating control, restrict contributor-level access to trusted users only, and consider using a web application firewall (WAF) to filter XSS payloads. Note that restricting user roles may impact site functionality if contributors are needed for content creation.
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Same weakness CWE-79 – Cross-site Scripting (XSS)
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External POC / Exploit Code
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