CVE-2021-30153 Information disclosure in n/a
Attackers can determine if hidden user accounts exist by editing their user pages with VisualEditor, leaking private user status.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2021-30153?
CVE-2021-30153 is a medium-severity vulnerability in Mediawiki Mediawiki, published on 15 Apr 2023. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
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.
Weakness: CWE-668
Which versions are affected by CVE-2021-30153?
1 open source package ship an affected version, including mediawiki. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
mediawiki Bitnami | All versions | 1.31.13, 1.35.2 |
Products include Mediawiki Mediawiki.
How do I fix CVE-2021-30153?
Upgrade mediawiki to a fixed version for your release line: 1.31.13 or 1.35.2.
Is CVE-2021-30153 being exploited?
There is no known exploitation of CVE-2021-30153 in the wild and no public exploit code.
Other vulnerabilities in Mediawiki Mediawiki
Sources
Also known as BIT-mediawiki-2021-30153, DEBIAN-CVE-2021-30153, GHSA-fr28-p2jh-93mm.