CVE-2025-23073Public exploitNetwork attack vector

Autoblocked IP disclosure via mixed-target API query

Published Jan 14, 2025 · Updated Oct 16, 2025

Information disclosure in Wikimedia Foundation GlobalBlocking master allows remote authenticated users to retrieve an autoblocked user's IP address. The list=globalblocks API processes a username and correctly guessed IP together in bgtargets, then returns the associated autoblock instead of hiding its target. Exposure requires GlobalBlocking and CheckUser, global autoblocking, a victim edit and an administrator-created block; no release version was affected.

CVSS severity3.5
Low
EPSS probability0.34%
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 Wikimedia Foundation GlobalBlocking master allows remote authenticated users to retrieve an autoblocked user's IP address. The list=globalblocks API processes a username and correctly guessed IP together in bgtargets, then returns the associated autoblock instead of hiding its target. Exposure requires GlobalBlocking and CheckUser, global autoblocking, a victim edit and an administrator-created block; no release version was affected.

The record

CVE
CVE-2025-23073
Published
Jan 14, 2025
Updated
Oct 16, 2025
Vendor
Wikimedia Foundation
Product
GlobalBlocking
Classifications
CWE-200, CWE-88, CAPEC-37
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 14, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 16, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=master

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Wikimedia Foundation · GlobalBlockingversion=master

Published CVSS scores

3.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/UI:R/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-200Exposure of Sensitive Information to an Unauthorized Actor
CWE-88Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')
CAPEC-37Retrieve Embedded Sensitive Data

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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