Vulnerability · Published Dec 20, 2021 · Assigned by mitre
CVE-2021-44858
High 7.5
In plain English
A high-severity security flaw in the mediawiki package (Debian). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.4% (higher than 72% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)7.5High
Exploit odds (30 days)1.4%top 27.9% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | mediawiki | 1:1.35.5-1 | DEBIAN-CVE-2021-44858 |
| Debian:13 | mediawiki | 1:1.35.5-1 | DEBIAN-CVE-2021-44858 |
| Debian:14 | mediawiki | 1:1.35.5-1 | DEBIAN-CVE-2021-44858 |