CVE-2021-21339— Cleartext storage of session identifier
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I. Basic Information for CVE-2021-21339
Vulnerability Information
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Vulnerability Title
Cleartext storage of session identifier
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 user session identifiers were stored in cleartext - without processing of additional cryptographic hashing algorithms. This vulnerability cannot be exploited directly and occurs in combination with a chained attack - like for instance SQL injection in any other component of the system. 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:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
敏感数据的明文存储
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 Core 存在跨站脚本漏洞，该漏洞源于内容预览渲染器组件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-2021-21339
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|---|
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- https://packagist.org/packages/typo3/cms-corex_refsource_MISC
- https://github.com/TYPO3/TYPO3.CMS/security/advisories/GHSA-qx3w-4864-94chx_refsource_CONFIRM
- https://typo3.org/security/advisory/typo3-core-sa-2021-006x_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2021-21339
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-2021-21359 | 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) |
| 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-312
- CVE-2026-7163
Assisted-service: assisted-service: authenticated users can - CVE-2026-41385
OpenClaw < 2026.3.31 - Nostr Private Key Exposure via config - CVE-2026-6553
TYPO3 CMS Stores Cleartext Password in User Settings Module - CVE-2026-35644
OpenClaw < 2026.3.22 - Credential Exposure via baseUrl Field - CVE-2025-14815
Information Disclosure, Tampering, and Denial-of-Service Vul
V. Comments for CVE-2021-21339
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