CVE-2021-45472: XSS
First published: Fri Dec 24 2021(Updated: )
In MediaWiki through 1.37, XSS can occur in Wikibase because an external identifier property can have a URL format that includes a $1 formatter substitution marker, and the javascript: URL scheme (among others) can be used.
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| MediaWiki | <=1.37 | |
| Fedora | =35 |
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Reference Links
- https://gerrit.wikimedia.org/r/q/I37ece1dfdc80d38055067c9c4fa73ba591acd8bd
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/Z7JNQA53K675TQBBJPZRAG5ZT6XES3IS/
- https://phabricator.wikimedia.org/T297570
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Z7JNQA53K675TQBBJPZRAG5ZT6XES3IS/
Frequently Asked Questions
What is the severity of CVE-2021-45472?
CVE-2021-45472 has been classified as a moderate severity vulnerability.
How do I fix CVE-2021-45472?
To fix CVE-2021-45472, upgrade to MediaWiki version 1.38 or later.
What type of vulnerability is CVE-2021-45472?
CVE-2021-45472 is a Cross-Site Scripting (XSS) vulnerability affecting MediaWiki.
Which versions of MediaWiki are affected by CVE-2021-45472?
CVE-2021-45472 affects MediaWiki versions up to and including 1.37.
Is Fedora 35 affected by CVE-2021-45472?
Yes, Fedora 35 is affected by CVE-2021-45472 when using MediaWiki.
- agent/type
- agent/severity
- agent/description
- collector/mitre-cve
- source/MITRE
- agent/references
- agent/first-publish-date
- agent/last-modified-date
- agent/author
- agent/event
- agent/source
- agent/weakness
- agent/tags
- agent/softwarecombine
- collector/nvd-api
- source/NVD
- agent/software-canonical-lookup
- agent/software-canonical-lookup-request
- collector/nvd-index
- vendor/mediawiki
- canonical/mediawiki
- version/mediawiki/1.37
- vendor/fedoraproject
- canonical/fedora
- version/fedora/35