# CVE-2023-4492: Easy Address Book Web Server XSS vulnerability

> An attacker can inject JavaScript payloads into address book fields, leading to script execution when the application is loaded.

- **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:** 4 Oct 2023
- **Updated:** 5 Sep 2024
- **Also known as:** GHSA-3cfm-vj7w-48fq

## What is CVE-2023-4492?

CVE-2023-4492 is a medium-severity cross-site scripting vulnerability in EFS Software Easy Address Book Web Server, published on 4 Oct 2023. 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

Vulnerability in Easy Address Book Web Server 1.6 version, affecting the parameters (firstname, homephone, lastname, middlename, workaddress, workcity, workcountry, workphone, workstate and workzip) of the /addrbook.ghp file, allowing an attacker to inject a JavaScript payload specially designed to run when the application is loaded

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

## Which versions are affected by CVE-2023-4492?

It affects 1 product.


Products: Easy Address Book Web Server Project Easy Address Book Web Server.

## How do I fix CVE-2023-4492?

No fix has been published for CVE-2023-4492 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-4492 being exploited?

There is no known exploitation of CVE-2023-4492 in the wild and no public exploit code.

## Other vulnerabilities in EFS Software Easy Address Book Web Server

- [CVE-2023-4491](https://insights.sbomify.com/CVE-2023-4491/): Easy Address Book Web Server Buffer overflow vulnerability (critical 9.8)
- [CVE-2023-4493](https://insights.sbomify.com/CVE-2023-4493/): Easy Address Book Web Server Stored XSS vulnerability (medium 6.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-4492 and fix it if it is affected.

What it is: CVE-2023-4492 is a medium-severity cross-site scripting vulnerability in EFS Software Easy Address Book Web Server, published on 4 Oct 2023. 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-2023-4492 in the wild and no public exploit code.

Affected product: EFS Software Easy Address Book Web Server. 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-2023-4492/ (Markdown: https://insights.sbomify.com/CVE-2023-4492/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-4492
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-4492
- OSV: https://osv.dev/vulnerability/CVE-2023-4492

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-4492/
Summaries are generated and may contain mistakes; the official description above is the record.