CVE-2021-21340 Cross-Site Scripting in Content Preview

2021-03-2301:50:34

CWE-79

GitHub_M

www.cve.org

cve-2021-21340

cross-site scripting

typo3

content management system

database fields

backend user account

CVSS3

5.4

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

EPSS

0.001

Percentile

26.2%

JSON

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 database fields used as descriptionColumn are vulnerable to cross-site scripting when their content gets previewed. A valid backend user account is needed to exploit this vulnerability. This is fixed in versions 10.4.14, 11.1.1 .

CNA Affected

[
  {
    "product": "TYPO3.CMS",
    "vendor": "TYPO3",
    "versions": [
      {
        "status": "affected",
        "version": ">= 10.0.0, <= 10.4.13"
      },
      {
        "status": "affected",
        "version": ">= 11.0.0, <= 11.1.0"
      }
    ]
  }
]