CVE-2020-27621

MEDIUM
4.3
CVSS Score
Published: October 22, 2020 at 03:04 AM UTC
Updated: June 17, 2026 at 03:09 AM UTC
1 product affected across 1 vendorMediaWiki

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Severity
MEDIUM4.3
Exploit prediction
EPSS 0.7%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v ≤ 1.35.0

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (2)

x_refsource_MISCExploitPatchVendor Advisory
https://phabricator.wikimedia.org/T265810

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
NVD-CWE-Other

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