What is CVE-2021-42047?

CVE-2021-42047 is a medium-severity vulnerability in Mediawiki, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2022-09-29.

How severe is CVE-2021-42047?

Medium severity. CVSS v3 base score is 5.4 out of 10.

XSS in Mediawiki

CVE-2021-42047

An issue was discovered in the Growth extension in MediaWiki through 1.36.2. On any Wiki with the Mentor Dashboard feature enabled, users can login with a mentor account and trigger an XSS payload (such as alert) via Growthexperiments-mentor-dashboard-mentee-overview-no-js-fallback.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.006 (46.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

Affected products

Mediawiki
N/a — versions n/a

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

cve@mitre.org (Patch, x_refsource_MISC, Vendor Advisory)
cve@mitre.org (Patch, x_refsource_MISC, Vendor Advisory)

Frequently asked questions

What is CVE-2021-42047?: CVE-2021-42047 is a medium-severity vulnerability in Mediawiki, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2022-09-29.
How severe is CVE-2021-42047?: Medium severity. CVSS v3 base score is 5.4 out of 10.