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

> Attackers can exploit CSRF to inject stored XSS scripts into the WooCommerce Sales Timers plugin, potentially compromising user sessions and site integrity.

- **Severity:** High 8.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 28 Sep 2021
- **Updated:** 31 Mar 2025
- **Also known as:** GHSA-f825-g8w3-7mxh

## What is CVE-2021-34636?

CVE-2021-34636 is a high-severity vulnerability in WpDevArt Countdown and CountUp, WooCommerce Sales Timers, published on 28 Sep 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official 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.

Weakness: CWE-352 (Cross-Site Request Forgery)

## Which versions are affected by CVE-2021-34636?

It affects 1 product.


Products: Wpdevart Countdown and Countup\, Woocommerce Sales Timer.

## How do I fix CVE-2021-34636?

No fix has been published for CVE-2021-34636 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-34636 being exploited?

There is no known exploitation of CVE-2021-34636 in the wild and no public exploit code.

## Other vulnerabilities in WpDevArt Countdown and CountUp, WooCommerce Sales Timers

- [CVE-2023-47533](https://insights.sbomify.com/CVE-2023-47533/): WordPress Countdown and CountUp, WooCommerce Sales Timer Plugin <= 1.8.2 is vulnerable to Cross Site Scripting (XSS) (medium 5.9)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-34636 and fix it if it is affected.

What it is: CVE-2021-34636 is a high-severity vulnerability in WpDevArt Countdown and CountUp, WooCommerce Sales Timers, published on 28 Sep 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2021-34636 in the wild and no public exploit code.

Affected product: WpDevArt Countdown and CountUp, WooCommerce Sales Timers. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2021-34636/ (Markdown: https://insights.sbomify.com/CVE-2021-34636/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-34636
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-34636
- OSV: https://osv.dev/vulnerability/CVE-2021-34636

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From sbomify Insights: https://insights.sbomify.com/CVE-2021-34636/
Summaries are generated and may contain mistakes; the official description above is the record.