WS-2018-0051 | Mend Vulnerability Database

Vulnerability DatabaseWS-2018-0051

WS-2018-0051

Published:May 14, 2026

Updated:May 14, 2026

Information Disclosure in TYPO3 6.2.0 before 6.2.26, 7.6.0 before 7.6.10 and 8.0.0 before 8.2.1. The TYPO3 backend module stores the username of an authenticated backend user in its cache files. By guessing the file path to the cache files it is possible to receive valid backend usernames.

Affected Packages

typo3/cms (PHP):

Affected version(s) =6.2.15 <6.2.16

Fix Suggestion:

Update to version 6.2.16

instituteweb/typo3-cms (PHP):

Affected version(s) >=8.0.0 <8.2.1

Fix Suggestion:

Update to version 8.2.1

typo3/cms (PHP):

Affected version(s) >=6.2.21 <6.2.24

Fix Suggestion:

Update to version 6.2.24

typo3/cms (PHP):

Affected version(s) =6.2.1 <6.2.2

Fix Suggestion:

Update to version 6.2.2

typo3/cms (PHP):

Affected version(s) >=TYPO3_6-2-1 <TYPO3_6-2-26

Fix Suggestion:

Update to version TYPO3_6-2-26

typo3/cms (PHP):

Affected version(s) =TYPO3_7-6-0 <dev-TYPO3_7-6

Fix Suggestion:

Update to version dev-TYPO3_7-6

instituteweb/typo3-cms (PHP):

Affected version(s) >=7.6.4 <7.6.10

Fix Suggestion:

Update to version 7.6.10

typo3/cms (PHP):

Affected version(s) >=6.2.5 <6.2.8

Fix Suggestion:

Update to version 6.2.8

typo3/cms (PHP):

Affected version(s) =6.2.9 <6.2.10-rc1

Fix Suggestion:

Update to version 6.2.10-rc1

typo3/cms (PHP):

Affected version(s) >=TYPO3_6-2-0rc2 <dev-TYPO3_6-2

Fix Suggestion:

Update to version dev-TYPO3_6-2

typo3/cms (PHP):

Affected version(s) >=TYPO3_7-6-1 <TYPO3_7-6-10

Fix Suggestion:

Update to version TYPO3_7-6-10

instituteweb/typo3-cms (PHP):

Affected version(s) >=6.2.19 <6.2.26

Fix Suggestion:

Update to version 6.2.26

typo3/cms (PHP):

Affected version(s) >=6.2.11 <6.2.13

Fix Suggestion:

Update to version 6.2.13

typo3/cms (PHP):

Affected version(s) =8.2.0 <8.2.1

Fix Suggestion:

Update to version 8.2.1

typo3/cms (PHP):

Affected version(s) =6.2.18 <6.2.19

Fix Suggestion:

Update to version 6.2.19

typo3/cms (PHP):

Affected version(s) >=TYPO3_8-0-0 <dev-TYPO3_8-2

Fix Suggestion:

Update to version dev-TYPO3_8-2

Related Resources (2)

https://github.com/TYPO3/TYPO3.CMS/commit/fcd52bc5bb84fbbb6b75f99f7c2fe1850ada36da

https://typo3.org/teams/security/security-bulletins/typo3-core/typo3-core-sa-2016-017/

Do you need more information?

CVSS v4

Base Score:

6.3

Attack Vector

NETWORK

Attack Complexity

HIGH

Attack Requirements

NONE

Privileges Required

NONE

User Interaction

NONE

Vulnerable System Confidentiality

LOW

Vulnerable System Integrity

NONE

Vulnerable System Availability

NONE

Subsequent System Confidentiality

NONE

Subsequent System Integrity

NONE

Subsequent System Availability

NONE

CVSS v3

Base Score:

3.7

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

LOW

Integrity

NONE

Availability

NONE