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CVE-2026-0668— VisualData extension: Regular Expression Denial of Service (ReDoS) via crafted user input

Quick assessment

Affected
Wikimedia Foundation MediaWiki - VisualData Extension
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.

MediaWiki - VisualData Extension是MediaWiki开源的一个数据可视化扩展。 MediaWiki - VisualData Extension 1.45版本存在安全漏洞，该漏洞源于低效的正则表达式复杂性，可能导致正则表达式指数级膨胀。

AI Predicted 5.3 Difficulty: Moderate EPSS 0.48% · P40

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking
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I. Basic Information for CVE-2026-0668

Vulnerability Information
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Vulnerability Title
VisualData extension: Regular Expression Denial of Service (ReDoS) via crafted user input
Source: CVE Program / CVE List V5
Vulnerability Description
Inefficient Regular Expression Complexity vulnerability in Wikimedia Foundation MediaWiki - VisualData Extension allows Regular Expression Exponential Blowup.This issue affects MediaWiki - VisualData Extension: 1.45.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
CWE-1333
Source: CVE Program / CVE List V5
Vulnerability Title
MediaWiki - VisualData Extension 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
MediaWiki - VisualData Extension是MediaWiki开源的一个数据可视化扩展。 MediaWiki - VisualData Extension 1.45版本存在安全漏洞，该漏洞源于低效的正则表达式复杂性，可能导致正则表达式指数级膨胀。
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 MediaWiki - VisualData Extension 1.45 -

II. Public POCs for CVE-2026-0668

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III. Intelligence Information for CVE-2026-0668

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Other References for CVE-2026-0668 (5)

Same Patch Batch · Wikimedia Foundation · 2026-01-07 · 3 CVEs total

CVE-2026-0669 Path Traversal vulnerability in CSS extension on certain web servers
CVE-2026-0670 Stored XSS through a system message and a user-provided parameter in ProofreadPage

IV. Related Vulnerabilities

Same vendor: Wikimedia Foundation
Same weakness: CWE-1333

V. Comments for CVE-2026-0668

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