CVE-2021-31555

HIGH

MediaWiki < 1.35.2 - Improper Input Validation in Oauth Extension

Title source: llm

Description

An issue was discovered in the Oauth extension for MediaWiki through 1.35.2. It did not validate the oarc_version (aka oauth_registered_consumer.oarc_version) parameter's length.

References (2)

Core 2

Core References

Third Party Advisory x_refsource_misc

https://phabricator.wikimedia.org/T277388

Issue Tracking, Vendor Advisory x_refsource_misc

https://gerrit.wikimedia.org/r/q/I222c053b4b14ac1ad0f5b3a51565b1b9cd4c139d

Scores

CVSS v3 7.5

EPSS 0.0021

EPSS Percentile 43.3%

Attack Vector NETWORK

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

Details

CWE

CWE-20

Status published

Products (1)

mediawiki/mediawiki < 1.35.2

Published Apr 22, 2021

Tracked Since Feb 18, 2026