CVE-2021-44858
mediawiki - security update
7.5
HIGH
CVSS 3.1
EPSS 0.39%
Description
An issue was discovered in MediaWiki before 1.35.5, 1.36.x before 1.36.3, and 1.37.x before 1.37.1. It is possible to use action=edit&undo= followed by action=mcrundo and action=mcrrestore to view private pages on a private wiki that has at least one page set in $wgWhitelistRead.
How to fix CVE-2021-44858
To remediate CVE-2021-44858, upgrade the affected package to a fixed version below.
- —upgrade to 1.35.5 or later
- —upgrade to 1:1.35.4-1+deb11u2 or later
- —upgrade to 1:1.27.7-1+deb9u11 or later
Is CVE-2021-44858 being exploited?
Low — EPSS is 0.4%, meaning exploitation activity has not been observed at scale.
Affected packages (3)
- from 0, < 1.35.5, >= 1.36.0, < 1.36.3, >= 1.37.0, < 1.37.1
- from 0, < 1:1.35.4-1+deb11u2
- from 0, < 1:1.27.7-1+deb9u11
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |