# CVE-2021-24454: YOP Poll < 6.2.8 - Stored Cross-Site Scripting

> Stored XSS in YOP Poll plugin allows attackers to inject scripts via unsanitized 'Other' answers when specific display options are enabled.

- **Severity:** Medium 6.1 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N`)
- **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:** 12 Jul 2021
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-whff-r7hf-mx5w

## What is CVE-2021-24454?

CVE-2021-24454 is a medium-severity cross-site scripting vulnerability in Unknown YOP Poll, published on 12 Jul 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

In the YOP Poll WordPress plugin before 6.2.8, when a pool is created with the options "Allow other answers", "Display other answers in the result list" and "Show results", it can lead to Stored Cross-Site Scripting issues as the 'Other' answer is not sanitised before being output in the page. The execution of the XSS payload depends on the 'Show results' option selected, which could be before or after sending the vote for example.

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

## Which versions are affected by CVE-2021-24454?

It affects 1 product.


Products: Yop-Poll Yop Poll.

## How do I fix CVE-2021-24454?

No fix has been published for CVE-2021-24454 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-24454 being exploited?

There is no known exploitation of CVE-2021-24454 in the wild and no public exploit code.

## Other vulnerabilities in Unknown YOP Poll

- [CVE-2021-24833](https://insights.sbomify.com/CVE-2021-24833/): YOP Poll < 6.3.1 - Author+ Stored Cross-Site Scripting via Preview Module (medium 5.4)
- [CVE-2021-24834](https://insights.sbomify.com/CVE-2021-24834/): YOP Poll < 6.3.1 - Author+ Stored Cross-Site Scripting via Options Module (medium 5.4)
- [CVE-2017-2127](https://insights.sbomify.com/CVE-2017-2127/): Cross-site scripting in YOP Poll (medium 5.4)
- [CVE-2023-6109](https://insights.sbomify.com/CVE-2023-6109/): YOP Poll <= 6.5.26 - Race Condition to Vote Manipulation (medium 5.3)
- [CVE-2022-1600](https://insights.sbomify.com/CVE-2022-1600/): YOP Poll < 6.4.3 - IP Spoofing (medium 5.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-24454 and fix it if it is affected.

What it is: CVE-2021-24454 is a medium-severity cross-site scripting vulnerability in Unknown YOP Poll, published on 12 Jul 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-2021-24454 in the wild and no public exploit code.

Affected product: Unknown YOP Poll. 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-2021-24454/ (Markdown: https://insights.sbomify.com/CVE-2021-24454/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-24454
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-24454
- OSV: https://osv.dev/vulnerability/CVE-2021-24454

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-24454/
Summaries are generated and may contain mistakes; the official description above is the record.