CVE-2023-37305Public exploitNetwork attack vector

Suppressed username disclosure via public page metadata

Published Jun 30, 2023 · Updated Nov 26, 2024

Information disclosure in MediaWiki ProofreadPage through 1.39.3 allows remote attackers to read suppressed reviewer usernames. PageContentHandler and PageDisplayHandler expose the page-level reviewer name through API-returned wikitext and prpPageQualityUser without checking whether the user is hidden. No authentication is required, but a reviewer account must first be suppressed after setting the page quality level; exposure is limited to its username.

CVSS severity5.3
Medium
EPSS probability0.61%
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 ProofreadPage through 1.39.3 allows remote attackers to read suppressed reviewer usernames. PageContentHandler and PageDisplayHandler expose the page-level reviewer name through API-returned wikitext and prpPageQualityUser without checking whether the user is hidden. No authentication is required, but a reviewer account must first be suppressed after setting the page quality level; exposure is limited to its username.

The record

CVE
CVE-2023-37305
Published
Jun 30, 2023
Updated
Nov 26, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-203, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 30, 2023CVE publishedPublication date reported by the CVE source.
  2. Nov 26, 2024Record 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 privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-203Observable Discrepancy
T1190Exploit Public-Facing Application

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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