Medium severity · published Apr 22, 2021
CVE-2021-31548
An issue was discovered in the AbuseFilter extension for MediaWiki through 1.35.2
6.5
CVSS
0.7%
EPSS
No
On KEV
Description
An issue was discovered in the AbuseFilter extension for MediaWiki through 1.35.2. A MediaWiki user who is partially blocked or was unsuccessfully blocked could bypass AbuseFilter and have their edits completed.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.7% · higher than 53% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
ME
Mediawiki · Mediawiki
through 1.35.2 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-31548
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-31548
Issue Tracking
https://gerrit.wikimedia.org/r/q/Ifac795125927d584a31d95e1b4c4241eef860fa1
Third Party Advisory
https://phabricator.wikimedia.org/T272333
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