CVE-2025-6593Network attack vector

IP address disclosure via unverified email notification

Published Feb 2, 2026 · Updated Feb 2, 2026

Information disclosure in affected MediaWiki releases allows remote attackers to obtain an IP address through an email notification. User.php sends an account email-change notice containing the requester's IP address to the replacement address before that address is verified. Exploitation requires an account email change and access to the unverified recipient mailbox; disclosure is limited to the requester's IP address.

CVSS severity2.1
Low
EPSS probability0.46%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Information disclosure in affected MediaWiki releases allows remote attackers to obtain an IP address through an email notification. User.php sends an account email-change notice containing the requester's IP address to the replacement address before that address is verified. Exploitation requires an account email change and access to the unverified recipient mailbox; disclosure is limited to the requester's IP address.

The record

CVE
CVE-2025-6593
Published
Feb 2, 2026
Updated
Feb 2, 2026
Vendor
Wikimedia Foundation
Product
MediaWiki
Classifications
CWE-200
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 2, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 2, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=1.27.0 <1.39.13, 1.42.7 1.43.2, 1.44.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Wikimedia Foundation · MediaWikiversion=1.27.0 <1.39.13, 1.42.7 1.43.2, 1.44.0

Published CVSS scores

2.1Wikimedia FoundationCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:L/VI:N/VA:N/SC:L/SI:N/SA: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 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 exploitUnconfirmed

Weakness, pattern, technique

CWE-200Exposure of Sensitive Information to an Unauthorized Actor

Public exploit references

No public exploit references are available in this record.

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

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo