# CVE-2023-3219: EventON < 2.1.2 - Unauthenticated Post Access via IDOR

> Unauthenticated attackers can access unpublished or protected post content via the EventON plugin's ICS export functionality.

- **Severity:** Medium 5.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 10 Jul 2023
- **Updated:** 13 Feb 2025
- **Also known as:** GHSA-6ccc-8wgj-7rf9

## What is CVE-2023-3219?

CVE-2023-3219 is a medium-severity missing authorization vulnerability in Unknown EventON, published on 10 Jul 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The EventON WordPress plugin before 2.1.2 does not validate that the event_id parameter in its eventon_ics_download ajax action is a valid Event, allowing unauthenticated visitors to access any Post (including unpublished or protected posts) content via the ics export functionality by providing the numeric id of the post.

Weakness: CWE-639 (Authorization Bypass Through User-Controlled Key)

## Which versions are affected by CVE-2023-3219?

It affects 1 product.


Products: Myeventon Eventon.

## How do I fix CVE-2023-3219?

No fix has been published for CVE-2023-3219 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-3219 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-3219 exists.

Public exploit code:

- Wordpress Plugin EventON Calendar 4.4 - Unauthenticated Post Access via IDOR (exploitdb)
- EventON Lite < 2.1.2 - Arbitrary File Download (nuclei): http/cves/2023/CVE-2023-3219.yaml

## Other vulnerabilities in Unknown EventON

- [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-2023-3219 and fix it if it is affected.

What it is: CVE-2023-3219 is a medium-severity missing authorization vulnerability in Unknown EventON, published on 10 Jul 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-3219 exists.

Affected product: Unknown EventON. 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-2023-3219/ (Markdown: https://insights.sbomify.com/CVE-2023-3219/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-3219
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-3219
- OSV: https://osv.dev/vulnerability/CVE-2023-3219

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-3219/
Summaries are generated and may contain mistakes; the official description above is the record.