CVE-2022-41766Public exploitNetwork attack vector

Suppressed username disclosure via rollback error

Published May 29, 2023 · Updated Jan 14, 2025

Information disclosure in MediaWiki 1.37.0 through 1.37.4 and 1.38.0 through 1.38.2 allows remote authenticated users to read suppressed usernames. RollbackPage inserts the hidden revision author's name into the alreadyrolled error instead of substituting the generic rev-deleted-user label when suppression applies. Rollback permission and a suppressed null-revision author are required, and the response exposes only that account name.

CVSS severity4.3
Medium
EPSS probability0.57%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in MediaWiki 1.37.0 through 1.37.4 and 1.38.0 through 1.38.2 allows remote authenticated users to read suppressed usernames. RollbackPage inserts the hidden revision author's name into the alreadyrolled error instead of substituting the generic rev-deleted-user label when suppression applies. Rollback permission and a suppressed null-revision author are required, and the response exposes only that account name.

The record

CVE
CVE-2022-41766
Published
May 29, 2023
Updated
Jan 14, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-732, T1087
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 29, 2023CVE publishedPublication date reported by the CVE source.
  2. Jan 14, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

4.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-732Incorrect Permission Assignment for Critical Resource
T1087Account Discovery

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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