CVE-2021-21358— Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in typo3/cms-form
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I. Basic Information for CVE-2021-21358
Vulnerability Information
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Vulnerability Title
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in typo3/cms-form
Source: NVD (National Vulnerability Database)
Vulnerability Description
TYPO3 is an open source PHP based web content management system. In TYPO3 before versions 10.4.14, 11.1.1 it has been discovered that the Form Designer backend module of the Form Framework is vulnerable to cross-site scripting. A valid backend user account with access to the form module is needed to exploit this vulnerability. This is fixed in versions 10.4.14, 11.1.1.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: NVD (National Vulnerability Database)
Vulnerability Title
TYPO3 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
TYPO3是瑞士TYPO3（Typo3）协会的一套免费开源的内容管理系统(框架)(CMS/CMF)。 TYPO3 存在跨站脚本漏洞，该漏洞源于表单设计器后端模块中对用户提供的数据的处理不足。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2021-21358
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- https://packagist.org/packages/typo3/cms-formx_refsource_MISC
- https://github.com/TYPO3/TYPO3.CMS/security/advisories/GHSA-x79j-wgqv-g8h2x_refsource_CONFIRM
- https://typo3.org/security/advisory/typo3-core-sa-2021-004x_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2021-21358
Same Patch Batch · TYPO3 · 2021-03-23 · 8 CVEs total
| CVE-2021-21355 | 8.6 HIGH | Unrestricted File Upload in Form Framework |
| CVE-2021-21357 | 8.3 HIGH | Broken Access Control in Form Framework |
| CVE-2021-21339 | 5.9 MEDIUM | Cleartext storage of session identifier |
| CVE-2021-21359 | 5.9 MEDIUM | Denial of Service in Page Error Handling |
| CVE-2021-21340 | 5.4 MEDIUM | Cross-Site Scripting in Content Preview |
| CVE-2021-21370 | 5.4 MEDIUM | Cross-Site Scripting in Content Preview (CType menu) |
| CVE-2021-21338 | 4.7 MEDIUM | Open Redirection in Login Handling |
IV. Related Vulnerabilities
Same product: TYPO3.CMS
Same vendor: TYPO3
- CVE-2026-6553
TYPO3 CMS Stores Cleartext Password in User Settings Module - CVE-2026-4208
Authentication Bypass in extension "E-Mail MFA Provider" (mf - CVE-2026-4202
Broken Access Control in extension "Redirect Tab" - CVE-2026-1323
Insecure Deserialization in extension "Mailqueue" (mailqueue - CVE-2026-0895
Insecure Deserialization in extension "Mailqueue" (mailqueue
Same weakness: CWE-79
- CVE-2026-8262
Devs Palace ERP Online chart-save cross site scripting - CVE-2026-8256
Devs Palace ERP Online mr-save cross site scripting - CVE-2026-8255
Devs Palace ERP Online add_new_customer cross site scripting - CVE-2026-8254
Devs Palace ERP Online sales_save cross site scripting - CVE-2026-8253
Devs Palace ERP Online purchase_save cross site scripting
V. Comments for CVE-2021-21358
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