# CVE-2022-24729: Regular expression Denial of Service in dialog plugin

> An attacker can cause a browser tab freeze in CKEditor4 by exploiting a regular expression in the dialog plugin, requiring an upgrade to fix.

- **Severity:** Medium 6.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H`)
- **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:** Yes
- **Published:** 16 Mar 2022
- **Updated:** 23 Apr 2025
- **Also known as:** DEBIAN-CVE-2022-24729, UBUNTU-CVE-2022-24729

## What is CVE-2022-24729?

CVE-2022-24729 is a medium-severity denial of service vulnerability in Drupal Drupal, published on 16 Mar 2022. 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

CKEditor4 is an open source what-you-see-is-what-you-get HTML editor. CKEditor4 prior to version 4.18.0 contains a vulnerability in the `dialog` plugin. The vulnerability allows abuse of a dialog input validator regular expression, which can cause a significant performance drop resulting in a browser tab freeze. A patch is available in version 4.18.0. There are currently no known workarounds.

Weakness: CWE-1333 (Inefficient Regular Expression Complexity), CWE-400 (Uncontrolled Resource Consumption)

## Which versions are affected by CVE-2022-24729?

It affects 9 products.


Products: Ckeditor Ckeditor, Drupal Drupal, Fedoraproject Fedora, Oracle Application Express, Oracle Commerce Merchandising, Oracle Financial Services Analytical Applications Infrastructure, Oracle Financial Services Behavior Detection Platform, Oracle Financial Services Trade-Based Anti Money Laundering, Oracle Peoplesoft Enterprise Peopletools.

## How do I fix CVE-2022-24729?

Upgrade to a fixed version.

## Is CVE-2022-24729 being exploited?

There is no known exploitation of CVE-2022-24729 in the wild and no public exploit code.

## Other vulnerabilities in Drupal Drupal

- [CVE-2023-31541](https://insights.sbomify.com/CVE-2023-31541/): File upload in n/a (critical 9.8)
- [CVE-2021-41164](https://insights.sbomify.com/CVE-2021-41164/): Advanced Content Filter (ACF) vulnerability allowing to execute JavaScript code using malformed HTML (high 8.2)
- [CVE-2021-41165](https://insights.sbomify.com/CVE-2021-41165/): HTML comments vulnerability allowing to execute JavaScript code (high 8.2)
- [CVE-2021-32808](https://insights.sbomify.com/CVE-2021-32808/): Cross-site scripting in ckeditor via abuse of undo functionality (high 7.6)
- [CVE-2011-4972](https://insights.sbomify.com/CVE-2011-4972/): Missing authorization in CKEditor Drupal module (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-24729 and fix it if it is affected.

What it is: CVE-2022-24729 is a medium-severity denial of service vulnerability in Drupal Drupal, published on 16 Mar 2022. 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-2022-24729 in the wild and no public exploit code.

Affected product: Drupal Drupal. 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-2022-24729/ (Markdown: https://insights.sbomify.com/CVE-2022-24729/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-24729
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-24729
- OSV: https://osv.dev/vulnerability/CVE-2022-24729

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-24729/
Summaries are generated and may contain mistakes; the official description above is the record.