Description
In TYPO3 CMS 9.0.0 through 9.5.16 and 10.0.0 through 10.4.1, it has been discovered that backend user settings (in $BE_USER->uc) are vulnerable to insecure deserialization. In combination with vulnerabilities of third party components, this can lead to remote code execution. A valid backend user account is needed to exploit this vulnerability. This has been fixed in 9.5.17 and 10.4.2.
References (1)
Core 1
Core References
Third Party Advisory x_refsource_confirm
https://github.com/TYPO3/TYPO3.CMS/security/advisories/GHSA-2wj9-434x-9hvp
Scores
CVSS v3
8.8
EPSS
0.0118
EPSS Percentile
79.0%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Details
CWE
CWE-502
Status
published
Products (3)
typo3/cms
10.0.0 - 10.4.2Packagist
typo3/cms-core
9.0.0 - 9.5.17Packagist
typo3/typo3
9.0.0 - 9.5.16
Published
May 14, 2020
Tracked Since
Feb 18, 2026