XSS in Taskbuilder

CVE-2026-9570

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.

Vulnerability class: XSS (Cross-Site Scripting)

Published · last modified .

CVSS v3 metric

CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L.

EPSS exploit prediction

EPSS: 0.003 (15.2th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 15th percentile — 15.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-9570: held from 0.001 to 0.003.

EPSS over last 30 days · oldest: 0.001 · newest: 0.003 · change: +0.001

Affected products

  • Taskbuilder — versions 0

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-9570?
CVE-2026-9570 is a high-severity vulnerability in Taskbuilder, classified under Cross-site Scripting. CVSS score: 7.1/10. Published 2026-06-17.
How severe is CVE-2026-9570?
High severity. CVSS v3 base score is 7.1 out of 10.