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.
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.008 (56.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 56th percentile — 56.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000
Affected products
Weakness classification (CWE)
References
- phabricator.wikimedia.org/T270453 (Exploit, Vendor Advisory)
- lists.wikimedia.org/pipermail/wikitech-l/2021-April/094418.html (Patch, Mailing List, Vendor Advisory)
- lists.wikimedia.org/hyperkitty/list/wikitech-l@lists.wikimedia.org/message/XYBF…
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.