CVE-2025-11937Network attack vector

Stored XSS via unescaped system-message rendering

Published Oct 18, 2025 · Updated Oct 18, 2025

Stored XSS in Wikimedia Foundation MediaWiki SecurePoll master allows remote attackers to execute script through a crafted system message. The public record identifies SecurePoll's system-message rendering path but does not disclose the specific file, function, or unsafe output operation. The CNA rates the path as network-reachable without privileges or user interaction; execution occurs in the browser context of a page that renders the message.

CVSS severity6.9
Medium
EPSS probability0.42%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in Wikimedia Foundation MediaWiki SecurePoll master allows remote attackers to execute script through a crafted system message. The public record identifies SecurePoll's system-message rendering path but does not disclose the specific file, function, or unsafe output operation. The CNA rates the path as network-reachable without privileges or user interaction; execution occurs in the browser context of a page that renders the message.

The record

CVE
CVE-2025-11937
Published
Oct 18, 2025
Updated
Oct 18, 2025
Vendor
Wikimedia Foundation
Product
MediaWiki SecurePoll
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 18, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 18, 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 privilegesunauthenticated

What is affected?

Wikimedia Foundation · MediaWiki SecurePollversion=master

Published CVSS scores

6.9Wikimedia FoundationCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007Command and Scripting Interpreter: JavaScript/JScript

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

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Your stack

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