Medium severity · published Oct 22, 2020
CVE-2020-27621
The FileImporter extension in MediaWiki through 1.35.0 was not properly attributing various user actions to a specific user's IP address
4.3
CVSS
0.7%
EPSS
No
On KEV
Description
The FileImporter extension in MediaWiki through 1.35.0 was not properly attributing various user actions to a specific user's IP address. Instead, for various actions, it would report the IP address of an internal Wikimedia Foundation server by omitting X-Forwarded-For data. This resulted in an inability to properly audit and attribute various user actions performed via the FileImporter extension.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
Low
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 1.35.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-27621
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-27621
Exploit
https://gerrit.wikimedia.org/r/q/I24a240253c7a5c66dd493a68e8c23d95a17e1b21
Exploit
https://phabricator.wikimedia.org/T265810
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