Information Exposure Affecting typo3/cms-core package, versions >=11.0.0, <11.1.1>=10.0.0, <10.4.14<9.5.25


Severity

Recommended
0.0
medium
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.17% (55th percentile)

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  • Snyk IDSNYK-PHP-TYPO3CMSCORE-1086570
  • published18 Mar 2021
  • disclosed17 Mar 2021
  • creditOliver Hader

Introduced: 17 Mar 2021

CVE-2021-21339  (opens in a new tab)
CWE-200  (opens in a new tab)

How to fix?

Upgrade typo3/cms-core to version 11.1.1, 10.4.14, 9.5.25 or higher.

Overview

typo3/cms-core is a free open source enterprise content management system.

Affected versions of this package are vulnerable to Information Exposure. User session identifiers are stored in cleartext - without processing of additional cryptographic hashing algorithms. This vulnerability cannot be exploited directly and occurs in combination with a chained attack.

CVSS Scores

version 3.1