# CVE-2020-29395: Cross-site scripting in n/a

> Cross-site scripting vulnerability in the EventON WordPress plugin allows attackers to inject malicious scripts via the search field.

- **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:** 30 Nov 2020
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-9v2h-8hm5-f9wm

## What is CVE-2020-29395?

CVE-2020-29395 is a medium-severity cross-site scripting vulnerability in n/a, published on 30 Nov 2020. 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 EventON plugin through 3.0.5 for WordPress allows addons/?q= XSS via the search field.

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

## Which versions are affected by CVE-2020-29395?

It affects 1 product.


Products: Myeventon Eventon.

## How do I fix CVE-2020-29395?

No fix has been published for CVE-2020-29395 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-29395 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2020-29395 exists.

Public exploit code:

- Wordpress Plugin EventON Calendar 3.0.5 - Reflected Cross-Site Scripting (exploitdb)
- Wordpress EventON Calendar 3.0.5 - Cross-Site Scripting (nuclei): http/cves/2020/CVE-2020-29395.yaml

## Other vulnerabilities in n/a

- [CVE-2023-6242](https://insights.sbomify.com/CVE-2023-6242/): Cross-site request forgery in EventON (Pro) - WordPress Virtual Event Calendar Plugin (medium 6.5)
- [CVE-2023-6244](https://insights.sbomify.com/CVE-2023-6244/): Cross-site request forgery in EventON (Pro) - WordPress Virtual Event Calendar Plugin (medium 6.5)
- [CVE-2023-6158](https://insights.sbomify.com/CVE-2023-6158/): Missing authorization in EventON (Pro) - WordPress Virtual Event Calendar Plugin (medium 6.5)
- [CVE-2025-3527](https://insights.sbomify.com/CVE-2025-3527/): Cross-site scripting in EventON (Pro) - WordPress Virtual Event Calendar Plugin (medium 6.4)
- [CVE-2023-7200](https://insights.sbomify.com/CVE-2023-7200/): EventON < 4.4.1 - Reflected Cross-Site Scripting (medium 6.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-29395 and fix it if it is affected.

What it is: CVE-2020-29395 is a medium-severity cross-site scripting vulnerability in n/a, published on 30 Nov 2020. 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-2020-29395 exists.

Affected product: n/a. 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-2020-29395/ (Markdown: https://insights.sbomify.com/CVE-2020-29395/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-29395
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-29395
- OSV: https://osv.dev/vulnerability/CVE-2020-29395

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-29395/
Summaries are generated and may contain mistakes; the official description above is the record.