CVE-2025-61650— UserInfoCard is vulnerable to message key stored XSS
Quick assessment
Affected
Wikimedia Foundation CheckUser
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Wikimedia CheckUser是Wikimedia基金会的一个打击破坏行为的高级调查工具。 Wikimedia CheckUser 795bf333272206a0189050d975e94b70eb7dc507之前版本存在安全漏洞，该漏洞源于输入中和不当，可能导致跨站脚本攻击。
Possible ATT&CK Techniques 2 AI
T1189 · Drive-by Compromise T1059 · Command and Scripting Interpreter
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I. Basic Information for CVE-2025-61650
Vulnerability Information
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Vulnerability Title
UserInfoCard is vulnerable to message key stored XSS
Source: CVE Program / CVE List V5
Vulnerability Description
Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation CheckUser. This vulnerability is associated with program files src/Services/CheckUserUserInfoCardService.Php.
This issue affects CheckUser: from * before 795bf333272206a0189050d975e94b70eb7dc507.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
Wikimedia CheckUser 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Wikimedia CheckUser是Wikimedia基金会的一个打击破坏行为的高级调查工具。 Wikimedia CheckUser 795bf333272206a0189050d975e94b70eb7dc507之前版本存在安全漏洞，该漏洞源于输入中和不当，可能导致跨站脚本攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Wikimedia Foundation | CheckUser | * ~ 795bf333272206a0189050d975e94b70eb7dc507 | - |
|
II. Public POCs for CVE-2025-61650
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · Wikimedia Foundation · 2026-02-03 · 26 CVEs total
| CVE-2025-67476 | Importing leaks IP address of importer via EventStreams | |
| CVE-2025-67483 | Theoretical i18n XSS in mediawiki.page.preview.js when a page has multiple protection leve | |
| CVE-2025-67481 | mw.message(…).parse() doesn't output safe HTML, but it's being used as if it does | |
| CVE-2025-67484 | Action API xslt option allows JavaScript execution by administrators who are not interface | |
| CVE-2025-67482 | Lua segfault in unpack() | |
| CVE-2025-61655 | Stored XSS through system messages in VisualEditor | |
| CVE-2025-61658 | Special:GlobalContributions shows edits on wikis the viewer doesn't have access to | |
| CVE-2025-61656 | XSS when pasting into VE | |
| CVE-2025-61651 | i18n XSS through Special:CheckUser CheckUser helper | |
| CVE-2025-61654 | UserInfoCard: Do permission checking when getting counts of global and local edits, new ar | |
| CVE-2025-61657 | Wikimedia Vector 安全漏洞 | |
| CVE-2025-61653 | Extension:TextExtracts does not check for authorizeRead when returning extracts | |
| CVE-2025-61652 | Action API discussiontoolspageinfo does not check for authorizeRead for the page | |
| CVE-2025-61647 | UserInfoCard: Don't allow access to information about users who are suppressed if you don' | |
| CVE-2025-67477 | Stored XSS through a system message in Special:ApiSandbox | |
| CVE-2025-67475 | Stored XSS through edit summaries in MW Core | |
| CVE-2025-67480 | list=allrevisions can be used to bypass Extension:Lockdown | |
| CVE-2025-67479 | Magic word replacement in legacy parser allows using reserved data attributes through wiki | |
| CVE-2025-67478 | Wrong E-Mail address composition for usernames with a comma and Umlauts in it like "Döe, J | |
| CVE-2025-61649 | UserInfoCard: Check that performing user has permission to view log entries for number of |
Showing top 20 of 26 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: CheckUser
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CVE-2026-58034
Stored XSS through a system message when blocking a temporar -
CVE-2026-34090
Suggested investigations: Handle suppressed usernames -
CVE-2025-67478
Wrong E-Mail address composition for usernames with a comma -
CVE-2025-61658
Special:GlobalContributions shows edits on wikis the viewer -
CVE-2025-61651
i18n XSS through Special:CheckUser CheckUser helper
Same vendor: Wikimedia Foundation
-
CVE-2026-58025
Remote Code Execution via Unsafe Deserialization in LogItem -
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Full RCE using EasyTimeline Extension
Same weakness: CWE-79
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Baserow before 2.3.0 Stored Cross-Site Scripting via Rich Te -
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Cross-site scripting in Nx Witness VMS Web Administration al -
CVE-2026-78391
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CVE-2026-17033
CVE-2026-17033 CVE Record
V. Comments for CVE-2025-61650
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