CVE-2021-31548

MediumCVSS 6.5/10Last modified Jun 17, 2026

Description

An issue was discovered in the AbuseFilter extension for MediaWiki through 1.35.2. A MediaWiki user who is partially blocked or was unsuccessfully blocked could bypass AbuseFilter and have their edits completed.

Metrics

CVSS 3.1 6.5/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Weakness enumeration

CWE-863

Affected software

No affected versions have been published.

Timeline

Published
Apr 22, 2021
Last modified
Jun 17, 2026
NVD status
Modified

Related CVEs from 2021

CVE-2021-315494.3An issue was discovered in the AbuseFilter extension for MediaWiki through 1.35.2. The Special:AbuseFilter/examine form allowed for the discCVE-2021-31555.5snapd 2.54.2 and earlier created ~/snap directories in user home directories without specifying owner-only permissions. This could allow a lCVE-2021-315505.4An issue was discovered in the CommentBox extension for MediaWiki through 1.35.2. Via crafted configuration variables, a malicious actor couCVE-2021-315516.1An issue was discovered in the PageForms extension for MediaWiki through 1.35.2. Crafted payloads for Token-related query parameters allowedCVE-2021-315525.4An issue was discovered in the AbuseFilter extension for MediaWiki through 1.35.2. It incorrectly executed certain rules related to blockingCVE-2021-315536.5An issue was discovered in the CheckUser extension for MediaWiki through 1.35.2. MediaWiki usernames with trailing whitespace could be storeCVE-2021-315545.4An issue was discovered in the AbuseFilter extension for MediaWiki through 1.35.2. It improperly handled account blocks for certain automatiCVE-2021-315557.5An issue was discovered in the Oauth extension for MediaWiki through 1.35.2. It did not validate the oarc_version (aka oauth_registered_consCVE-2021-315569.8An issue was discovered in the Oauth extension for MediaWiki through 1.35.2. MWOAuthConsumerSubmitControl.php does not ensure that the lengtCVE-2021-315586.1DIAEnergie Version 1.7.5 and prior is vulnerable to stored cross-site scripting when an unauthenticated user injects arbitrary code into theCVE-2021-315597.5A crafted request bypasses S2S TCP Token authentication writing arbitrary events to an index in Splunk Enterprise Indexer 8.1 versions beforCVE-2021-31567.8Sudo before 1.9.5p2 contains an off-by-one error that can result in a heap-based buffer overflow, which allows privilege escalation to root
CVE-2021-31548: Medium severity, CVSS 6.5 | Vulnix