# CVE-2021-24388: Vik Rent Car < 1.1.7 - CSRF to Stored XSS

> Attackers can inject malicious scripts via unsanitized custom fields, potentially executing code in admin sessions due to missing CSRF protection.

- **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:** 6 Jul 2021
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-cw42-gp9m-qx5j

## What is CVE-2021-24388?

CVE-2021-24388 is a medium-severity cross-site scripting vulnerability in E4J s.r.l. VikRentCar Car Rental Management System, published on 6 Jul 2021. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

In the VikRentCar Car Rental Management System WordPress plugin before 1.1.7, there is a custom filed option by which we can manage all the fields that the users will have to fill in before saving the order. However, the field name is not sanitised or escaped before being output back in the page, leading to a stored Cross-Site Scripting issue. There is also no CSRF check done before saving the setting, allowing attackers to make a logged in admin set arbitrary Custom Fields, including one with XSS payload in it.

Weakness: CWE-79 (Improper Neutralization of Input During Web Page Generation), CWE-352 (Cross-Site Request Forgery)

## Which versions are affected by CVE-2021-24388?

It affects 1 product.


Products: E4j Vikrentcar Car Rental Management System.

## How do I fix CVE-2021-24388?

No fix has been published for CVE-2021-24388 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-24388 being exploited?

There is no known exploitation of CVE-2021-24388 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-24388 and fix it if it is affected.

What it is: CVE-2021-24388 is a medium-severity cross-site scripting vulnerability in E4J s.r.l. VikRentCar Car Rental Management System, published on 6 Jul 2021. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2021-24388 in the wild and no public exploit code.

Affected product: E4J s.r.l. VikRentCar Car Rental Management System. 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-2021-24388/ (Markdown: https://insights.sbomify.com/CVE-2021-24388/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-24388
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-24388
- OSV: https://osv.dev/vulnerability/CVE-2021-24388

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From sbomify Insights: https://insights.sbomify.com/CVE-2021-24388/
Summaries are generated and may contain mistakes; the official description above is the record.