What is CVE-2021-30153?

CVE-2021-30153 is a medium-severity vulnerability in Mediawiki, classified under Exposure of Resource to Wrong Sphere. CVSS score: 4.3/10. Published 2023-04-15.

How severe is CVE-2021-30153?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Vulnerability in Mediawiki

CVE-2021-30153

An issue was discovered in the VisualEditor extension in MediaWiki before 1.31.13, and 1.32.x through 1.35.x before 1.35.2. . When using VisualEditor to edit a MediaWiki user page belonging to an existing, but hidden, user, VisualEditor will disclose that the user exists. (It shouldn't because they are hidden.) This is related to ApiVisualEditor.

EPSS: 0.008 (54.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.

Affected products

Mediawiki
N/a — versions n/a

Weakness classification (CWE)

CWE-668 — Exposure of Resource to Wrong Sphere

References

cve@mitre.org (Exploit, Vendor Advisory)
cve@mitre.org (Patch, Mailing List, Vendor Advisory)
cve@mitre.org

Frequently asked questions

What is CVE-2021-30153?: CVE-2021-30153 is a medium-severity vulnerability in Mediawiki, classified under Exposure of Resource to Wrong Sphere. CVSS score: 4.3/10. Published 2023-04-15.
How severe is CVE-2021-30153?: Medium severity. CVSS v3 base score is 4.3 out of 10.