# CVE-2017-20089: Gwolle Guestbook Plugin cross site scriting

> Remote attackers can inject malicious scripts into the Gwolle Guestbook plugin, potentially compromising user sessions or site integrity.

- **Severity:** Low 3.5 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/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:** 23 Jun 2022
- **Updated:** 15 Apr 2025
- **Also known as:** GHSA-grmq-8wh7-vqvm

## What is CVE-2017-20089?

CVE-2017-20089 is a low-severity cross-site scripting vulnerability in unspecified Gwolle Guestbook Plugin, published on 23 Jun 2022. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

A vulnerability was found in Gwolle Guestbook Plugin 1.7.4. It has been rated as problematic. This issue affects some unknown processing. The manipulation leads to basic cross site scripting. The attack may be initiated remotely.

Weakness: CWE-79 (Improper Neutralization of Input During Web Page Generation), CWE-80 (Improper Neutralization of Script-Related HTML Tags in a Web Page)

## Which versions are affected by CVE-2017-20089?

It affects 1 product.


Products: Gwolle Guestbook Project Gwolle Guestbook.

## How do I fix CVE-2017-20089?

No fix has been published for CVE-2017-20089 yet. Limit exposure of the affected software until one is available.

## Is CVE-2017-20089 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2017-20089 exists.

## Other vulnerabilities in unspecified Gwolle Guestbook Plugin

- [CVE-2015-8351](https://insights.sbomify.com/CVE-2015-8351/): Code injection in n/a (critical 9.0)
- [CVE-2021-24980](https://insights.sbomify.com/CVE-2021-24980/): Gwolle Guestbook < 4.2.0 - Reflected Cross-Site Scripting (medium 6.1)
- [CVE-2018-17884](https://insights.sbomify.com/CVE-2018-17884/): Cross-site scripting in n/a (medium 6.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2017-20089 and fix it if it is affected.

What it is: CVE-2017-20089 is a low-severity cross-site scripting vulnerability in unspecified Gwolle Guestbook Plugin, published on 23 Jun 2022. 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-2017-20089 exists.

Affected product: unspecified Gwolle Guestbook Plugin. 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-2017-20089/ (Markdown: https://insights.sbomify.com/CVE-2017-20089/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2017-20089
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2017-20089
- OSV: https://osv.dev/vulnerability/CVE-2017-20089

---
From sbomify Insights: https://insights.sbomify.com/CVE-2017-20089/
Summaries are generated and may contain mistakes; the official description above is the record.