# CVE-2024-9645: Post Grid and Gutenberg Blocks < 2.2.93 - Contributor+ Stored XSS

> Contributors can inject malicious scripts via block options, leading to stored XSS attacks against site visitors.

- **Severity:** Medium 5.4 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N`)
- **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:** 15 May 2025
- **Updated:** 16 May 2025
- **Also known as:** GHSA-w4w8-5w5f-5gvr

## What is CVE-2024-9645?

CVE-2024-9645 is a medium-severity cross-site scripting vulnerability in Unknown Post Grid, Posts Slider, Posts Carousel, Post Filter, Post Masonry, published on 15 May 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

The Post Grid, Posts Slider, Posts Carousel, Post Filter, Post Masonry WordPress plugin before 2.2.93 does not validate and escape some of its block options before outputting them back in a page/post where the block is embed, which could allow users with the contributor role and above to perform Stored Cross-Site Scripting attacks.

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

## Which versions are affected by CVE-2024-9645?

It affects 1 product.


Products: Pickplugins Post Grid.

## How do I fix CVE-2024-9645?

No fix has been published for CVE-2024-9645 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-9645 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-9645 exists.

## Other vulnerabilities in Unknown Post Grid, Posts Slider, Posts Carousel, Post Filter, Post Masonry

- [CVE-2021-4450](https://insights.sbomify.com/CVE-2021-4450/): Post Grid <= 2.1.12 - Contributor+ SQL Injection (high 8.8)
- [CVE-2024-8253](https://insights.sbomify.com/CVE-2024-8253/): Post Grid and Gutenberg Blocks 2.2.87 - 2.2.90 - Authenticated (Subscriber+) Privilege Escalation (high 8.8)
- [CVE-2024-13408](https://insights.sbomify.com/CVE-2024-13408/): Path traversal in Post Grid, Slider & Carousel Ultimate – with Shortcode, Gutenberg Block & Elementor Widget (high 7.5)
- [CVE-2020-35936](https://insights.sbomify.com/CVE-2020-35936/): Cross-site scripting in n/a (high 7.5)
- [CVE-2020-35937](https://insights.sbomify.com/CVE-2020-35937/): Cross-site scripting in n/a (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-9645 and fix it if it is affected.

What it is: CVE-2024-9645 is a medium-severity cross-site scripting vulnerability in Unknown Post Grid, Posts Slider, Posts Carousel, Post Filter, Post Masonry, published on 15 May 2025. Any signed-in user can exploit it over the network, 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-2024-9645 exists.

Affected product: Unknown Post Grid, Posts Slider, Posts Carousel, Post Filter, Post Masonry. 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-2024-9645/ (Markdown: https://insights.sbomify.com/CVE-2024-9645/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-9645
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-9645
- OSV: https://osv.dev/vulnerability/CVE-2024-9645

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From sbomify Insights: https://insights.sbomify.com/CVE-2024-9645/
Summaries are generated and may contain mistakes; the official description above is the record.