CVE-2026-58030
Received Received - Intake

Cross-Site Scripting in SyntaxHighlight_GeSHi Extension

Publication date: 2026-07-01

Last updated on: 2026-07-01

Assigner: wikimedia-foundation

Description
Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation SyntaxHighlight_GeSHi. This vulnerability is associated with program files includes/SyntaxHighlight.Php. This issue affects SyntaxHighlight_GeSHi: from * before 1.46.0, 1.45.4, 1.44.6, 1.43.9.

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Meta Information

Published
2026-07-01
Last Modified
2026-07-01
Generated
2026-07-01
AI Q&A
2026-07-01
EPSS Evaluated
N/A
NVD
CVE-2026-58030
EUVD
EUVD-2026-41018

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
wikimedia_foundation syntaxhighlight_geshi From 1.46.0 (exc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-79 The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

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Executive Summary

This vulnerability is an Improper Neutralization of Input During Web Page Generation, commonly known as Cross-site Scripting (XSS). It occurs in the Wikimedia Foundation's SyntaxHighlight_GeSHi component, specifically in the program file includes/SyntaxHighlight.Php.

XSS vulnerabilities allow attackers to inject malicious scripts into web pages viewed by other users, potentially leading to unauthorized actions or data theft.

Impact Analysis

This vulnerability can allow attackers to execute malicious scripts in the context of the affected web application, potentially leading to unauthorized actions such as stealing user credentials, session hijacking, or defacing web content.

Since the vulnerability exists in a syntax highlighting component, it may be exploited when users view specially crafted content that triggers the vulnerability.

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