CVE-2021-21338— Open Redirection in Login Handling
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I. Basic Information for CVE-2021-21338
Vulnerability Information
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Vulnerability Title
Open Redirection in Login Handling
Source: NVD (National Vulnerability Database)
Vulnerability Description
TYPO3 is an open source PHP based web content management system. In TYPO3 before versions 6.2.57, 7.6.51, 8.7.40, 9.5.25, 10.4.14, 11.1.1 it has been discovered that Login Handling is susceptible to open redirection which allows attackers redirecting to arbitrary content, and conducting phishing attacks. No authentication is required in order to exploit this vulnerability. This is fixed in versions 6.2.57, 7.6.51, 8.7.40, 9.5.25, 10.4.14, 11.1.1.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
指向未可信站点的URL重定向(开放重定向)
Source: NVD (National Vulnerability Database)
Vulnerability Title
TYPO3 输入验证错误漏洞
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 CMS 存在输入验证错误漏洞，该漏洞允许攻击者重定向到任意内容并进行网络钓鱼攻击。以下产品及版本受到影响：6.2.0-6.2.56, 7.0.0-7.6.50, 8.0.0-8.7.39, 9.0.0-9.5.24, 10.0.0-10.4.13, 11.0.0-11.1.0。
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-2021-21338
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POCPremium
No public POC found.
Login to generate AI POCIII. Intelligence Information for CVE-2021-21338
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- https://packagist.org/packages/typo3/cms-corex_refsource_MISC
- https://typo3.org/security/advisory/typo3-core-sa-2021-001x_refsource_MISC
- Open Redirection in Login Handling · Advisory · TYPO3/typo3 · GitHubx_refsource_CONFIRM
- https://nvd.nist.gov/vuln/detail/CVE-2021-21338
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-2021-21358 | 5.4 MEDIUM | Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in ty |
| 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) |
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-601
- CVE-2026-42350
Kargo: Open Redirect in UI OIDC Login Flow via redirectTo Qu - CVE-2026-42195
Unvalidated gitlab URL parameter redirects OAuth authorize s - CVE-2026-3318
Multiple vulnerabilities in Cradle e-commerce - CVE-2026-42259
Saltcorn: Open Redirect in `POST /auth/login` due to incompl - CVE-2026-6795
Open Redirect in DivvyDrive Information Technologies' DivvyD
V. Comments for CVE-2021-21338
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