Medium severity · published Apr 22, 2021
CVE-2021-31547
An issue was discovered in the AbuseFilter extension for MediaWiki through 1.35.2
4.3
CVSS
0.9%
EPSS
No
On KEV
Description
An issue was discovered in the AbuseFilter extension for MediaWiki through 1.35.2. Its AbuseFilterCheckMatch API reveals suppressed edits and usernames to unprivileged users through the iteration of crafted AbuseFilter rules.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.9% · higher than 59% 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-2021-31547
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-31547
Issue Tracking
https://gerrit.wikimedia.org/r/q/I3f7dbd8b873d411e37c8c3aac2339bf5ec36907d
Issue Tracking
https://gerrit.wikimedia.org/r/q/I4900b1be73323599d74e3164447f81eded094d75
Third Party Advisory
https://phabricator.wikimedia.org/T223654
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