CVE-2026-9570: CWE-79 Cross-Site Scripting (XSS) in Taskbuilder
The Taskbuilder WordPress plugin before 5.0.8 does not properly sanitise a URL parameter before echoing it into inline JavaScript on a frontend page containing one of its shortcodes, leading to a Reflected Cross-Site Scripting vulnerability that can be triggered against any logged-in user.
AI Analysis
Technical Summary
The Taskbuilder WordPress plugin versions prior to 5.0.8 contain a reflected XSS vulnerability (CWE-79). The issue is due to improper sanitization of a URL parameter that is echoed into inline JavaScript on frontend pages containing Taskbuilder shortcodes. This vulnerability can be exploited by sending a specially crafted URL to any logged-in user, potentially allowing script execution in their browser session.
Potential Impact
Successful exploitation allows an attacker to execute arbitrary JavaScript in the context of logged-in users visiting a maliciously crafted URL. This can lead to session hijacking, unauthorized actions performed on behalf of the user, or other malicious activities within the user's session on the affected site.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, avoid exposing the vulnerable shortcode on publicly accessible pages or restrict access to trusted users only. Monitor vendor channels for updates and apply any forthcoming patches promptly.
CVE-2026-9570: CWE-79 Cross-Site Scripting (XSS) in Taskbuilder
Description
The Taskbuilder WordPress plugin before 5.0.8 does not properly sanitise a URL parameter before echoing it into inline JavaScript on a frontend page containing one of its shortcodes, leading to a Reflected Cross-Site Scripting vulnerability that can be triggered against any logged-in user.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The Taskbuilder WordPress plugin versions prior to 5.0.8 contain a reflected XSS vulnerability (CWE-79). The issue is due to improper sanitization of a URL parameter that is echoed into inline JavaScript on frontend pages containing Taskbuilder shortcodes. This vulnerability can be exploited by sending a specially crafted URL to any logged-in user, potentially allowing script execution in their browser session.
Potential Impact
Successful exploitation allows an attacker to execute arbitrary JavaScript in the context of logged-in users visiting a maliciously crafted URL. This can lead to session hijacking, unauthorized actions performed on behalf of the user, or other malicious activities within the user's session on the affected site.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, avoid exposing the vulnerable shortcode on publicly accessible pages or restrict access to trusted users only. Monitor vendor channels for updates and apply any forthcoming patches promptly.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- WPScan
- Date Reserved
- 2026-05-26T11:19:25.354Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a3250bf0b89be6888f7d747
Added to database: 6/17/2026, 7:46:07 AM
Last enriched: 6/17/2026, 8:00:52 AM
Last updated: 6/17/2026, 10:22:17 AM
Views: 8
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