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

Published Jan 7, 2026
·
Updated

Inefficient Regular Expression Complexity vulnerability in Wikimedia Foundation MediaWiki - VisualData Extension allows Regular Expression Exponential Blowup.This issue affects MediaWiki - VisualData Extension: 1.45.

Affected Software

3 affected components
Wikimedia Foundation MediaWiki - VisualData Extension
All of the following
Wikisphere Visualdata Mediawiki
MediaWiki MediaWiki=1.45.0

Remediation

Patch Available

https://gerrit.wikimedia.org/r/q/I4ff2737c9f0ba805267d1fc8296e7cff61241ee3

Patch Available

https://gerrit.wikimedia.org/r/q/I893a9fca694a2613e29e149dea2d76d7f06063e5

Patch Available

https://gerrit.wikimedia.org/r/q/Ie08d9a8ceb2c9a22a635cfc27964353f14072dbf

Patch Available

https://gerrit.wikimedia.org/r/q/Ifbf9c2ade621226e14fe852f3217293772bf8bb8

Event History

Jan 7, 2026
CVE Published
via MITRE·05:36 PM
Data Sourced
via MITRE·05:36 PM
DescriptionWeakness
Data Sourced
via NVD·06:15 PM
RemedyDescriptionSeverityWeaknessAffected Software
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Frequently Asked Questions

1

What is the severity of CVE-2026-0668?

The severity of CVE-2026-0668 is classified as moderate due to the potential for resource exhaustion.

2

How do I fix CVE-2026-0668?

To fix CVE-2026-0668, update to the latest version of the MediaWiki - VisualData Extension, as the vulnerability has been addressed in subsequent releases.

3

What systems are affected by CVE-2026-0668?

CVE-2026-0668 affects the Wikimedia Foundation MediaWiki - VisualData Extension version 1.45.

4

What type of vulnerability is CVE-2026-0668?

CVE-2026-0668 is classified as an Inefficient Regular Expression Complexity vulnerability.

5

Can CVE-2026-0668 lead to a denial of service?

Yes, CVE-2026-0668 can potentially lead to denial of service through Regular Expression Exponential Blowup.

Company

Resources

Contact

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