Vulnerability Details : CVE-2021-44857
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=mcrundo followed by action=mcrrestore to replace the content of any arbitrary page (that the user doesn't have edit rights for). This applies to any public wiki, or a private wiki that has at least one page set in $wgWhitelistRead.
Products affected by CVE-2021-44857
- cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:*
- cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:*
- cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-44857
0.06%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 29 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-44857
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.0
|
MEDIUM | AV:N/AC:L/Au:S/C:N/I:P/A:N |
8.0
|
2.9
|
NIST | |
|
6.5
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N |
2.8
|
3.6
|
NIST |
CWE ids for CVE-2021-44857
-
The product does not perform an authorization check when an actor attempts to access a resource or perform an action.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-44857
-
https://www.mediawiki.org/wiki/2021-12_security_release/FAQ
2021-12 security release/FAQ - MediaWikiVendor Advisory
-
https://security.gentoo.org/glsa/202305-24
MediaWiki: Multiple Vulnerabilities (GLSA 202305-24) — Gentoo security
-
https://phabricator.wikimedia.org/T297322
⚓ T297322 CVE-2021-44857, CVE-2021-44858: Unauthorized users can undo edits on any protected page and view contents of private wikis using mcrundoThird Party Advisory
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