CVE-2026-9570 Taskbuilder < 5.0.8 - Reflected XSS via Shortcode
Attackers can execute arbitrary JavaScript in the context of logged-in users via a reflected XSS vulnerability in the Taskbuilder WordPress plugin.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-9570?
CVE-2026-9570 is a high-severity cross-site scripting vulnerability in Unknown Taskbuilder, published on 17 Jun 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official 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.
Weakness: CWE-79
Which versions are affected by CVE-2026-9570?
How do I fix CVE-2026-9570?
No fix has been published for CVE-2026-9570 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-9570 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-9570 exists.
Sources
Also known as GHSA-jf67-82h5-mx67.