# CVE-2021-24433: Simple Sort&Search <= 0.0.3 - Ccontributor+ Stored XSS

> Stored XSS in Simple Sort&Search plugin allows contributors to inject scripts via indexurl parameter, potentially leading to code execution or account takeover.

- **Severity:** Medium 5.4 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 16 Jan 2024
- **Updated:** 2 Jun 2025
- **Also known as:** GHSA-f6fq-4q55-rg2f

## What is CVE-2021-24433?

CVE-2021-24433 is a medium-severity cross-site scripting vulnerability in Unknown simple sort&search, published on 16 Jan 2024. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

The simple sort&search WordPress plugin through 0.0.3 does not make sure that the indexurl parameter of the shortcodes "category_sims", "order_sims", "orderby_sims", "period_sims", and "tag_sims" use allowed URL protocols, which can lead to stored cross-site scripting by users with a role as low as Contributor

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

## Which versions are affected by CVE-2021-24433?

It affects 1 product.


Products: Yukimichi Simple Sort\&search.

## How do I fix CVE-2021-24433?

No fix has been published for CVE-2021-24433 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-24433 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-24433 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-24433 and fix it if it is affected.

What it is: CVE-2021-24433 is a medium-severity cross-site scripting vulnerability in Unknown simple sort&search, published on 16 Jan 2024. Any signed-in user can exploit it over the network, 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-2021-24433 exists.

Affected product: Unknown simple sort&search. 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-2021-24433/ (Markdown: https://insights.sbomify.com/CVE-2021-24433/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-24433
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-24433
- OSV: https://osv.dev/vulnerability/CVE-2021-24433

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-24433/
Summaries are generated and may contain mistakes; the official description above is the record.