CVE-2021-31545
MEDIUM
5.3
CVSS Score
Published: April 22, 2021 at 02:30 AM UTC
Updated: June 17, 2026 at 03:51 AM UTC
1 product affected across 1 vendorMediaWiki
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Severity
MEDIUM5.3
Exploit prediction
EPSS 0.8%
Description
An issue was discovered in the AbuseFilter extension for MediaWiki through 1.35.2. The page_recent_contributors leaked the existence of certain deleted MediaWiki usernames, related to rev_deleted.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
v ≤ 1.35.2
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (2)
x_refsource_MISCIssue TrackingVendor Advisory
Source: [email protected]
https://gerrit.wikimedia.org/r/q/I8d5ed9ca84282ee50832035af86123633fc88293x_refsource_MISCThird Party Advisory
Source: [email protected]
https://phabricator.wikimedia.org/T71367CVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- LOW
- Integrity
- NONE
- Availability
- NONE
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-200
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