# CVE-2025-46228: WordPress Event post plugin <= 5.9.11 - Cross Site Scripting (XSS) Vulnerability

> An attacker can execute arbitrary scripts in the victim's browser via DOM-based XSS in the Event post WordPress plugin.

- **Severity:** Medium 6.5 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L`)
- **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:** 22 Apr 2025
- **Updated:** 28 Apr 2026
- **Also known as:** GHSA-89w7-ghxh-3v5x

## What is CVE-2025-46228?

CVE-2025-46228 is a medium-severity cross-site scripting vulnerability in Bastien Ho Event post, published on 22 Apr 2025. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Bastien Ho Event post event-post allows DOM-Based XSS.This issue affects Event post: from n/a through <= 5.9.11.

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

## Which versions are affected by CVE-2025-46228?

It affects 1 product.


Products: Avecnous Event Post.

## How do I fix CVE-2025-46228?

No fix has been published for CVE-2025-46228 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-46228 being exploited?

There is no known exploitation of CVE-2025-46228 in the wild and no public exploit code.

## Other vulnerabilities in Bastien Ho Event post

- [CVE-2023-49179](https://insights.sbomify.com/CVE-2023-49179/): WordPress Event post Plugin <= 5.8.6 is vulnerable to Cross Site Scripting (XSS) (medium 6.5)
- [CVE-2024-10186](https://insights.sbomify.com/CVE-2024-10186/): Event Post <= 5.9.6 - Authenticated (Contributor+) Stored Cross-Site Scripting via events_cal Shortcode (medium 6.4)
- [CVE-2024-1376](https://insights.sbomify.com/CVE-2024-1376/): Event post <= 5.9.4 - Missing Authorization (medium 4.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-46228 and fix it if it is affected.

What it is: CVE-2025-46228 is a medium-severity cross-site scripting vulnerability in Bastien Ho Event post, published on 22 Apr 2025. 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-2025-46228 in the wild and no public exploit code.

Affected product: Bastien Ho Event post. 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-2025-46228/ (Markdown: https://insights.sbomify.com/CVE-2025-46228/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-46228
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-46228
- OSV: https://osv.dev/vulnerability/CVE-2025-46228

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-46228/
Summaries are generated and may contain mistakes; the official description above is the record.