CVE-2021-42042
MEDIUM
4.8
CVSS Score
Published: October 6, 2021 at 08:28 PM UTC
Updated: June 17, 2026 at 04:09 AM UTC
1 product affected across 1 vendorMediaWiki
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Severity
MEDIUM4.8
Exploit prediction
EPSS 0.5%
Description
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.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
v ≤ 1.36.2
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (2)
x_refsource_MISCPatchVendor Advisory
Source: [email protected]
https://gerrit.wikimedia.org/r/q/Ibeb13d032ca044af53f6b2334e27b6b97b6f4e9fx_refsource_MISCIssue TrackingPatchVendor Advisory
Source: [email protected]
https://phabricator.wikimedia.org/T290692CVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- HIGH
- User Interaction
- REQUIRED
- Scope
- CHANGED
- Confidentiality
- LOW
- Integrity
- LOW
- Availability
- NONE
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-79
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