MediaWiki < 1.38.2 Unlimited Lexeme Length Denial Of Service

high Web App Scanning Plugin ID 113989



MediaWiki < 1.38.2 Unlimited Lexeme Length Denial Of Service


According to its self-reported version number, the instance of MediaWiki hosted on the remote web server is prior to 1.38.2. It is, therefore, affected by a vulnerability which permits remote attackers to specify oversize lexemes to be created, introducing various denial-of-service attacks within Wikibase and WikibaseLexeme extensions.

Note that the scanner has not tested for these issues but has instead relied only on the application's self-reported version number.


Upgrade to MediaWiki version 1.38.2 or later.

See Also

Plugin Details

Severity: High

ID: 113989

Type: remote

Published: 8/7/2023

Updated: 8/9/2023

Scan Template: api, basic, full, pci, scan

Risk Information


Risk Factor: Low

Score: 3.6


Risk Factor: Medium

Base Score: 5

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P

CVSS Score Source: CVE-2022-34750


Risk Factor: High

Base Score: 7.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS Score Source: CVE-2022-34750

Vulnerability Information

CPE: cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:*

Exploit Ease: No known exploits are available

Patch Publication Date: 7/7/2022

Vulnerability Publication Date: 6/28/2022

Reference Information

CVE: CVE-2022-34750