# CVE-2010-3659: TYPO3 Cross-site Scripting vulnerability in the extension manager and backend forms

Source: https://junglewise.ai/threats/cve-2010-3659-typo3-cross-site-scripting-vulnerability-in-the-extension-manager  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2022-05-17  
License: CC BY 4.0 with a link back

CVE-2010-3659 · Severity: low · CVSS 3 · Published 2022-05-17

TYPO3 Cross-site Scripting vulnerability in the extension manager and backend forms

Technologies: [typo3/cms-backend (Packagist)](https://junglewise.ai/threats/technologies/typo3-cms-backend). Vendors: [Packagist](https://junglewise.ai/threats/vendors/packagist).

## Quick answers

**Is CVE-2010-3659 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2010-3659 being exploited in the wild.

**How severe is CVE-2010-3659?** Low severity, with a CVSS score of 3, published 17 May 2022.

**Which products and versions are affected?** typo3/cms-backend (Packagist) ECOSYSTEM:introduced=4.1.0,fixed=4.1.14.

**Is there a fix for CVE-2010-3659?** Yes. typo3/cms-backend (Packagist): upgrade to 4.1.14 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected by CVE-2010-3659?** Check whether you run typo3/cms-backend (Packagist) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- typo3/cms-backend (Packagist): upgrade to 4.1.14 or later

  ```sh
  composer require typo3/cms-backend:^4.1.14
  ```


## Affected products

- typo3/cms-backend (Packagist) ECOSYSTEM:introduced=4.1.0,fixed=4.1.14

## Identifiers

- CVE-2010-3659
- GHSA-jr79-65xr-q7cx

## Related threats

- [The referrer enforcement introduced with TYPO3-CORE-SA-2020-006 became ineffective in TYPO3 v13.0, where TYPO3 CMS started](https://junglewise.ai/threats/cve-2026-19418-typo3-cms-broken-access-control-in-backend-and-install-tool)
- [TYPO3 CMS broken access control in Backend API](https://junglewise.ai/threats/cve-2026-47352-typo3-cms-broken-access-control-in-backend-api)
- [TYPO3 CMS broken access control in Clipboard](https://junglewise.ai/threats/cve-2026-47351-typo3-cms-broken-access-control-in-clipboard)
- [TYPO3 CMS Stores Cleartext Password in User Settings Module](https://junglewise.ai/threats/cve-2026-6553-typo3-cms-stores-cleartext-password-in-user-settings-module)
- [TYPO3 CMS Allows Broken Access Control in Edit Document Controller](https://junglewise.ai/threats/cve-2025-59020-typo3-cms-allows-broken-access-control-in-edit-document)