# CVE-2024-2509: Gutenberg Blocks by Kadence Blocks < 3.2.26 - Contributor+ Stored XSS

> Contributors can inject malicious scripts via unescaped block options, leading to stored XSS attacks on WordPress sites using Kadence Blocks.

- **Severity:** Medium 6.5 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L`)
- **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:** 5 Apr 2024
- **Updated:** 1 Aug 2024
- **Also known as:** GHSA-w5wq-cvfc-3r8g

## What is CVE-2024-2509?

CVE-2024-2509 is a medium-severity cross-site scripting vulnerability in Unknown Gutenberg Blocks by Kadence Blocks, published on 5 Apr 2024. 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 Gutenberg Blocks by Kadence Blocks WordPress plugin before 3.2.26 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-2024-2509?

It affects 1 product.


Products: Kadencewp Gutenberg Blocks With Ai.

## How do I fix CVE-2024-2509?

No fix has been published for CVE-2024-2509 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-2509 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-2509 exists.

## Other vulnerabilities in Unknown Gutenberg Blocks by Kadence Blocks

- [CVE-2023-6964](https://insights.sbomify.com/CVE-2023-6964/): Server-side request forgery in Kadence Blocks — Page Builder Toolkit for Gutenberg Editor (high 8.5)
- [CVE-2024-23500](https://insights.sbomify.com/CVE-2024-23500/): WordPress Kadence Blocks plugin <= 3.2.19 - Server Side Request Forgery (SSRF) vulnerability (high 7.7)
- [CVE-2025-5678](https://insights.sbomify.com/CVE-2025-5678/): Cross-site scripting in Kadence Blocks — Page Builder Toolkit for Gutenberg Editor (medium 6.4)
- [CVE-2024-12304](https://insights.sbomify.com/CVE-2024-12304/): Cross-site scripting in Kadence Blocks — Page Builder Toolkit for Gutenberg Editor (medium 6.4)
- [CVE-2024-10785](https://insights.sbomify.com/CVE-2024-10785/): Cross-site scripting in Kadence Blocks — Page Builder Toolkit for Gutenberg Editor (medium 6.4)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-2509 and fix it if it is affected.

What it is: CVE-2024-2509 is a medium-severity cross-site scripting vulnerability in Unknown Gutenberg Blocks by Kadence Blocks, published on 5 Apr 2024. 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-2024-2509 exists.

Affected product: Unknown Gutenberg Blocks by Kadence Blocks. 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-2024-2509/ (Markdown: https://insights.sbomify.com/CVE-2024-2509/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-2509
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-2509
- OSV: https://osv.dev/vulnerability/CVE-2024-2509

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-2509/
Summaries are generated and may contain mistakes; the official description above is the record.