CVE-2021-42040

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CVSS 3.1

7.5 high

EPSS

1%p65

Published

Oct 6, 2021 (Oct 6, 2021)

Modified

Jun 17, 2026

Description

An issue was discovered in MediaWiki through 1.36.2. A parser function related to loop control allowed for an infinite loop (and php-fpm hang) within the Loops extension because egLoopsCountLimit is mishandled. This could lead to memory exhaustion.

Vendors: mediawiki
Products: mediawiki
Weakness: CWE-835
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

NVD CVE.org GitHub PoCs EPSS (1.2%)

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