# CVE-2021-24763: Perfect Survey < 1.5.2 - Unauthorised AJAX Call to Stored XSS / Survey Settings Update

> Unauthenticated attackers can inject malicious scripts via survey settings, leading to stored XSS and unauthorized data modification in the Perfect Survey plugin.

- **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:** 1 Feb 2022
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-jq43-f5f4-5hhr

## What is CVE-2021-24763?

CVE-2021-24763 is a high-severity cross-site scripting vulnerability in n/a, published on 1 Feb 2022. 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 Perfect Survey WordPress plugin before 1.5.2 does not have proper authorisation nor CSRF checks in the save_global_setting AJAX action, allowing unauthenticated users to edit surveys and modify settings. Given the lack of sanitisation and escaping in the settings, this could also lead to a Stored Cross-Site Scripting issue which will be executed in the context of a user viewing any survey

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

## Which versions are affected by CVE-2021-24763?

It affects 1 product.


Products: Getperfectsurvey Perfect Survey.

## How do I fix CVE-2021-24763?

No fix has been published for CVE-2021-24763 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-24763 being exploited?

There is no known exploitation of CVE-2021-24763 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2021-24762](https://insights.sbomify.com/CVE-2021-24762/): Perfect Survey < 1.5.2 - Unauthenticated SQL Injection (critical 9.8)
- [CVE-2021-24764](https://insights.sbomify.com/CVE-2021-24764/): Perfect Survey < 1.5.2 - Reflected Cross-Site Scripting (medium 6.1)
- [CVE-2021-24765](https://insights.sbomify.com/CVE-2021-24765/): Perfect Survey < 1.5.2 - Unauthenticated Stored Cross-Site Scripting (medium 6.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-24763 and fix it if it is affected.

What it is: CVE-2021-24763 is a high-severity cross-site scripting vulnerability in n/a, published on 1 Feb 2022. 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-2021-24763 in the wild and no public exploit code.

Affected product: n/a. 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-2021-24763/ (Markdown: https://insights.sbomify.com/CVE-2021-24763/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-24763
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-24763
- OSV: https://osv.dev/vulnerability/CVE-2021-24763

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-24763/
Summaries are generated and may contain mistakes; the official description above is the record.