Vulnerability · Published Oct 6, 2021 · Assigned by mitre
CVE-2021-42048
Medium 4.8
In plain English
A medium-severity security flaw in the affected software. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 52% of all known vulnerabilities).
Severity (CVSS NVD)4.8Medium
Exploit odds (30 days)0.7%top 48.3% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official 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 products (as reported)
References
- https://phabricator.wikimedia.org/T289064 x_refsource_MISC
- https://gerrit.wikimedia.org/r/q/Iaa90a8976834d70caad592e9d1b18510318db537 x_refsource_MISC