# CVE-2021-24991: WooCommerce PDF Invoices & Packing Slips < 2.10.5 - Reflected Cross-Site Scripting

> Attackers can execute arbitrary scripts in the admin dashboard via unescaped parameters, potentially compromising administrator accounts.

- **Severity:** Medium 4.8 (`CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 3 Jan 2022
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-pmj4-hxrq-f9wh

## What is CVE-2021-24991?

CVE-2021-24991 is a medium-severity cross-site scripting vulnerability in Unknown WooCommerce PDF Invoices & Packing Slips, published on 3 Jan 2022. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.

### Official description

The WooCommerce PDF Invoices & Packing Slips WordPress plugin before 2.10.5 does not escape the tab and section parameters before outputting it back in an attribute, leading to a Reflected Cross-Site Scripting in the admin dashboard

Weakness: CWE-79 (Improper Neutralization of Input During Web Page Generation)

## Which versions are affected by CVE-2021-24991?

It affects 1 product.


Products: Wpovernight Woocommerce Pdf Invoices\& Packing Slips.

## How do I fix CVE-2021-24991?

No fix has been published for CVE-2021-24991 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-24991 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-24991 exists.

Public exploit code:

- WooCommerce PDF Invoices & Packing Slips WordPress Plugin < 2.10.5 - Cross-Site Scripting (nuclei): http/cves/2021/CVE-2021-24991.yaml

## Other vulnerabilities in Unknown WooCommerce PDF Invoices & Packing Slips

- [CVE-2024-22147](https://insights.sbomify.com/CVE-2024-22147/): WordPress WooCommerce PDF Invoices & Packing Slips Plugin <= 3.7.5 is vulnerable to SQL Injection (high 7.6)
- [CVE-2024-3045](https://insights.sbomify.com/CVE-2024-3045/): PDF Invoices & Packing Slips for WooCommerce <= 3.8.0 - Unauthenticated Stored Cross-Site Scripting (high 7.2)
- [CVE-2024-3047](https://insights.sbomify.com/CVE-2024-3047/): PDF Invoices & Packing Slips for WooCommerce <= 3.8.0 - Unauthenticated Server-Side Request Forgery (high 7.2)
- [CVE-2025-24373](https://insights.sbomify.com/CVE-2025-24373/): Unrestricted Access to PDF Documents via URL Manipulation in woocommerce-pdf-invoices-packing-slips (medium 6.3)
- [CVE-2022-2537](https://insights.sbomify.com/CVE-2022-2537/): WooCommerce PDF Invoices & Packing Slips < 3.0.1 - Reflected Cross-Site Scripting (medium 6.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-24991 and fix it if it is affected.

What it is: CVE-2021-24991 is a medium-severity cross-site scripting vulnerability in Unknown WooCommerce PDF Invoices & Packing Slips, published on 3 Jan 2022. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-24991 exists.

Affected product: Unknown WooCommerce PDF Invoices & Packing Slips. 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-2021-24991/ (Markdown: https://insights.sbomify.com/CVE-2021-24991/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-24991
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-24991
- OSV: https://osv.dev/vulnerability/CVE-2021-24991

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-24991/
Summaries are generated and may contain mistakes; the official description above is the record.