Vulnerability in MediaWiki
CVE-2021-44858
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.013 (69.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 70th percentile — 69.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.013 · newest: 0.013 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- phabricator.wikimedia.org/T297322 (Patch, Vendor Advisory)
- www.mediawiki.org/wiki/2021-12_security_release/FAQ (Mitigation, Vendor Advisory)
- security.gentoo.org/glsa/202305-24 (vendor-advisory)
Frequently asked questions
- What is CVE-2021-44858?
- CVE-2021-44858 is a high-severity vulnerability in MediaWiki, classified under Incorrect Default Permissions. CVSS score: 7.5/10. Published 2021-12-20.
- How severe is CVE-2021-44858?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2021-44858 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.