CVE-2021-30153

Public Exploit

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.

Category

4.3
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.15%
Vendor Advisory wikimedia.org Vendor Advisory wikimedia.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://phabricator.wikimedia.org/T270453 vendor advisory exploit
https://lists.wikimedia.org/pipermail/wikitech-l/2021-April/094418.html patch vendor advisory mailing list
https://lists.wikimedia.org/hyperkitty/list/wikitech-l%40lists.wikimedia.org/message/XYBF5RSTJRMVCP7QBYK7643W75A3KCIY/

Frequently Asked Questions

What is the severity of CVE-2021-30153?
CVE-2021-30153 has been scored as a medium severity vulnerability.
How to fix CVE-2021-30153?
To fix CVE-2021-30153, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-30153 being actively exploited in the wild?
It is possible that CVE-2021-30153 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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