# CVE-2022-4320: WordPress Events Calendar Plugin < 1.4.5 - Multiple Reflected XSS

> Reflected XSS in WordPress Events Calendar plugin allows attackers to execute scripts against users, including admins, via unsanitized parameters.

- **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:** 16 Jan 2023
- **Updated:** 4 Apr 2025
- **Also known as:** GHSA-7r7m-9r2x-mccm

## What is CVE-2022-4320?

CVE-2022-4320 is a medium-severity cross-site scripting vulnerability in Unknown WordPress Events Calendar Plugin, published on 16 Jan 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

The WordPress Events Calendar WordPress plugin before 1.4.5 does not sanitize and escapes a parameter before outputting it back in the page, leading to a Reflected Cross-Site Scripting which could be used against both unauthenticated and authenticated users (such as high-privilege ones like admin).

## Which versions are affected by CVE-2022-4320?

It affects 1 product.


Products: Mhsoftware Wordpress Events Calendar Plugin.

## How do I fix CVE-2022-4320?

No fix has been published for CVE-2022-4320 yet. Limit exposure of the affected software until one is available.

## Is CVE-2022-4320 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-4320 exists.

Public exploit code:

- WordPress Events Calendar <1.4.5 - Cross-Site Scripting (nuclei): http/cves/2022/CVE-2022-4320.yaml

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-4320 and fix it if it is affected.

What it is: CVE-2022-4320 is a medium-severity cross-site scripting vulnerability in Unknown WordPress Events Calendar Plugin, published on 16 Jan 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: It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-4320 exists.

Affected product: Unknown WordPress Events Calendar 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-2022-4320/ (Markdown: https://insights.sbomify.com/CVE-2022-4320/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-4320
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-4320
- OSV: https://osv.dev/vulnerability/CVE-2022-4320

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From sbomify Insights: https://insights.sbomify.com/CVE-2022-4320/
Summaries are generated and may contain mistakes; the official description above is the record.