CVE-2021-42042: XSS
First published: Wed Oct 06 2021(Updated: )
An issue was discovered in SpecialEditGrowthConfig in the GrowthExperiments extension in MediaWiki through 1.36.2. The growthexperiments-edit-config-error-invalid-title MediaWiki message was not being properly sanitized and allowed for the injection and execution of HTML and JavaScript.
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| MediaWiki | <=1.36.2 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
Frequently Asked Questions
What is the severity of CVE-2021-42042?
CVE-2021-42042 has been classified as a high severity vulnerability due to the potential for HTML and JavaScript injection.
How do I fix CVE-2021-42042?
To fix CVE-2021-42042, upgrade MediaWiki to version 1.36.3 or later where the vulnerability has been addressed.
What is the impact of CVE-2021-42042?
The impact of CVE-2021-42042 includes potential unauthorized execution of scripts, which could compromise the integrity and security of the MediaWiki installation.
Who is affected by CVE-2021-42042?
CVE-2021-42042 affects all MediaWiki installations using version 1.36.2 or earlier.
Is CVE-2021-42042 a remote code execution vulnerability?
CVE-2021-42042 does not directly lead to remote code execution, but it allows script injection which can lead to various attacks.
- agent/references
- agent/remedy
- agent/weakness
- agent/severity
- agent/description
- agent/type
- collector/mitre-cve
- source/MITRE
- agent/first-publish-date
- agent/last-modified-date
- agent/author
- agent/event
- agent/source
- agent/softwarecombine
- agent/tags
- collector/nvd-api
- source/NVD
- agent/software-canonical-lookup
- agent/software-canonical-lookup-request
- collector/nvd-index
- vendor/mediawiki
- canonical/mediawiki
- version/mediawiki/1.36.2