Vulnerability in MediaWiki
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. 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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.007 (51.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 52nd percentile — 51.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000
Affected products
References
- phabricator.wikimedia.org/T265810 (Exploit, Patch, Vendor Advisory)
- gerrit.wikimedia.org/r/q/I24a240253c7a5c66dd493a68e8c23d95a17e1b21 (Exploit, Patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2020-27621?
- CVE-2020-27621 is a medium-severity vulnerability in MediaWiki. CVSS score: 4.3/10. Published 2020-10-22.
- How severe is CVE-2020-27621?
- Medium severity. CVSS v3 base score is 4.3 out of 10.