# CVE-2023-3992: PostX - Gutenberg Post Grid Blocks < 3.0.6 - Reflected Cross-Site Scripting

> Attackers can inject malicious scripts via unsanitized parameters, potentially compromising admin accounts in the PostX WordPress plugin.

- **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 Aug 2023
- **Updated:** 23 Apr 2025
- **Also known as:** GHSA-xpfj-gvqx-gmx2

## What is CVE-2023-3992?

CVE-2023-3992 is a medium-severity cross-site scripting vulnerability in Unknown PostX, published on 30 Aug 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 PostX WordPress plugin before 3.0.6 does not sanitise and escape a parameter before outputting it back in the page, leading to a Reflected Cross-Site Scripting which could be used against high privilege users such as admin

## Which versions are affected by CVE-2023-3992?

It affects 1 product.


Products: Wpxpo Postx.

## How do I fix CVE-2023-3992?

No fix has been published for CVE-2023-3992 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-3992 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-3992 exists.

## Other vulnerabilities in Unknown PostX

- [CVE-2024-10728](https://insights.sbomify.com/CVE-2024-10728/): PostX <= 4.1.16 - Missing Authorization to Arbitrary Plugin Installation/Activation (high 8.8)
- [CVE-2023-36385](https://insights.sbomify.com/CVE-2023-36385/): WordPress PostX – Gutenberg Blocks for Post Grid Plugin <= 2.9.9 is vulnerable to Cross Site Scripting (XSS) (high 7.1)
- [CVE-2024-4305](https://insights.sbomify.com/CVE-2024-4305/): PostX < 4.1.0 - Contributor+ Stored XSS (medium 6.8)
- [CVE-2024-50443](https://insights.sbomify.com/CVE-2024-50443/): WordPress PostX plugin <= 4.1.12 - Cross Site Scripting (XSS) vulnerability (medium 6.5)
- [CVE-2024-31246](https://insights.sbomify.com/CVE-2024-31246/): WordPress PostX plugin <= 3.2.3 - Author+ Post/Page Duplication vulnerability (medium 5.4)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-3992 and fix it if it is affected.

What it is: CVE-2023-3992 is a medium-severity cross-site scripting vulnerability in Unknown PostX, published on 30 Aug 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-2023-3992 exists.

Affected product: Unknown PostX. 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-2023-3992/ (Markdown: https://insights.sbomify.com/CVE-2023-3992/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-3992
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-3992
- OSV: https://osv.dev/vulnerability/CVE-2023-3992

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-3992/
Summaries are generated and may contain mistakes; the official description above is the record.