# CVE-2024-2729: Otter Blocks < 2.6.6 - Contributor+ Stored XSS

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

- **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:** 18 Apr 2024
- **Updated:** 1 Aug 2024
- **Also known as:** GHSA-g2j7-fw82-h6x5

## What is CVE-2024-2729?

CVE-2024-2729 is a medium-severity cross-site scripting vulnerability in Unknown Otter Blocks , published on 18 Apr 2024. 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 Otter Blocks  WordPress plugin before 2.6.6 does not properly escape its mainHeadings blocks' attribute before appending it to the final rendered block, allowing contributors to conduct Stored XSS attacks.

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

## Which versions are affected by CVE-2024-2729?

It affects 1 product.


Products: Themeisle Otter Blocks.

## How do I fix CVE-2024-2729?

No fix has been published for CVE-2024-2729 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-2729 being exploited?

There is no known exploitation of CVE-2024-2729 in the wild and no public exploit code.

## Other vulnerabilities in Unknown Otter Blocks 

- [CVE-2024-3725](https://insights.sbomify.com/CVE-2024-3725/): Cross-site scripting in Otter Blocks – Gutenberg Blocks, Page Builder for Gutenberg Editor & FSE (medium 6.4)
- [CVE-2024-3343](https://insights.sbomify.com/CVE-2024-3343/): Cross-site scripting in Otter Blocks – Gutenberg Blocks, Page Builder for Gutenberg Editor & FSE (medium 6.4)
- [CVE-2024-3344](https://insights.sbomify.com/CVE-2024-3344/): Cross-site scripting in Otter Blocks – Gutenberg Blocks, Page Builder for Gutenberg Editor & FSE (medium 6.4)
- [CVE-2024-2226](https://insights.sbomify.com/CVE-2024-2226/): Cross-site scripting in Otter Blocks – Gutenberg Blocks, Page Builder for Gutenberg Editor & FSE (medium 6.4)
- [CVE-2024-2841](https://insights.sbomify.com/CVE-2024-2841/): Cross-site scripting in Otter Blocks – Gutenberg Blocks, Page Builder for Gutenberg Editor & FSE (medium 6.4)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-2729 and fix it if it is affected.

What it is: CVE-2024-2729 is a medium-severity cross-site scripting vulnerability in Unknown Otter Blocks , published on 18 Apr 2024. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2024-2729 in the wild and no public exploit code.

Affected product: Unknown Otter 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-2024-2729/ (Markdown: https://insights.sbomify.com/CVE-2024-2729/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-2729
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-2729
- OSV: https://osv.dev/vulnerability/CVE-2024-2729

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-2729/
Summaries are generated and may contain mistakes; the official description above is the record.