CVE-2021-41800
MediaWiki allows a denial of service
5.3
MEDIUM
CVSS 3.1
EPSS 0.69%
Description
MediaWiki before 1.36.2 allows a denial of service (resource consumption because of lengthy query processing time). Visiting Special:Contributions can sometimes result in a long running SQL query because PoolCounter protection is mishandled.
How to fix CVE-2021-41800
To remediate CVE-2021-41800, upgrade the affected package to a fixed version below.
- Bitnami/mediawiki—upgrade to 1.36.2 or later
- —upgrade to 1:1.35.4-1~deb11u1 or later
- —upgrade to 1.36.2 or later
Is CVE-2021-41800 being exploited?
Low — EPSS is 0.7%, meaning exploitation activity has not been observed at scale.
Affected packages (3)
- from 0, < 1.36.2
- from 0, < 1:1.35.4-1~deb11u1
- from 0, < 1.36.2
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L |
References (13)
- ADVISORYnvd.nist.gov/vuln/detail/CVE-2021-41800
- ADVISORYsecurity-tracker.debian.org/tracker/CVE-2021-41800
- WEBgithub.com/wikimedia/mediawiki/commit/781caf83dba90c18349f930bbaaa0e89f003f874
- WEBlists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CJDYJQWT43GBD6GNQ4OW7JOZ6WQ6DZTN/