CVE-2021-42048
MEDIUM
4.8
CVSS Score
Published: October 6, 2021 at 08:47 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 0.7%
Description
An issue was discovered in the Growth extension in MediaWiki through 1.36.2. Any admin can add arbitrary JavaScript code to the Newcomer home page footer, which can be executed by viewers with zero edits.
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/Iaa90a8976834d70caad592e9d1b18510318db537x_refsource_MISCPatchVendor Advisory
Source: [email protected]
https://phabricator.wikimedia.org/T289064CVSS
- 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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