Vulnerability · Published Oct 11, 2021 · Assigned by mitre
CVE-2021-41801
High 8.8
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 1.2% (higher than 67% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)8.8High
Exploit odds (30 days)1.2%top 32.7% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
The ReplaceText extension through 1.41 for MediaWiki has Incorrect Access Control. When a user is blocked after submitting a replace job, the job is still run, even if it may be run at a later time (due to the job queue backlog)
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | mediawiki | 1:1.35.4-1 | DEBIAN-CVE-2021-41801 |
| Debian:13 | mediawiki | 1:1.35.4-1 | DEBIAN-CVE-2021-41801 |
| Debian:14 | mediawiki | 1:1.35.4-1 | DEBIAN-CVE-2021-41801 |
| Ubuntu:25.10 | mediawiki | no fix listed | UBUNTU-CVE-2021-41801 |
| Ubuntu:26.04:LTS | mediawiki | no fix listed | UBUNTU-CVE-2021-41801 |
| Ubuntu:26.10 | mediawiki | no fix listed | UBUNTU-CVE-2021-41801 |