CVE-2023-3550

2023-09-2617:25:20

redhat.com

access.redhat.com

mediawiki

v1.40.0

namespace validation

vulnerability

xml files

remote attacker

low-privileged user account

administrator

exploit

7.3 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

NONE

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

7 High

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

47.0%

JSON

Mediawiki v1.40.0 does not validate namespaces used in XML files. Therefore, if the instance administrator allows XML file uploads, a remote attacker with a low-privileged user account can use this exploit to become an administrator by sending a malicious link to the instance administrator.