CVE-2021-31553

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Source

https://cve.org/CVERecord?id=CVE-2021-31553

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-31553.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2021-31553

Aliases

BIT-mediawiki-2021-31553

Published

2021-04-22T03:15:08.197Z

Modified

2026-03-15T22:37:39.979001Z

Severity

6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L CVSS Calculator

Summary

[none]

Details

An issue was discovered in the CheckUser extension for MediaWiki through 1.35.2. MediaWiki usernames with trailing whitespace could be stored in the cu_log database table such that denial of service occurred for certain CheckUser extension pages and functionality. For example, the attacker could turn off Special:CheckUserLog and thus interfere with usage tracking.

References

Affected packages

Git / github.com/wikimedia/mediawiki

Affected ranges

Type

GIT

Repo

https://github.com/wikimedia/mediawiki

Events

Introduced

Last affected

e5823c068a2e0d8af72538fe5cd152ddb43c58e9

Database specific

{
    "versions": [
        {
            "introduced": "0"
        },
        {
            "last_affected": "1.35.2"
        }
    ]
}

Affected versions

1.*

1.1.0

1.3.0beta1

1.35.0

1.35.0-rc.0

1.35.0-rc.1

1.35.0-rc.2

1.35.0-rc.3

1.35.1

1.35.2

1.5.0alpha1

1.5.0alpha2

1.5.0beta1

1.5.0beta2

1.5.0beta3

1.5.0beta4

1.6.0

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-31553.json"