CVE-2026-0668

VisualData extension: Regular Expression Denial of Service (ReDoS) via crafted user input

MEDIUM
5.3
CVSS Score
Published: January 7, 2026 at 05:36 PM UTC
Updated: October 26, 2026 at 09:10 PM UTC
2 products affected across 2 vendorsVisualdataVisualData· also runs on 1 platform

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Severity
MEDIUM5.3
Exploit prediction
EPSS 0.5%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

All versions
mediawiki-mediawiki (environment)

Runs on — not affected

The affected product only carries this flaw when running on these platforms. The platforms themselves are not vulnerable.

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.3MEDIUMCISA-ADP
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
LOW
Vector?

Quick Info

StatusANALYZED
CWE
CWE-1333

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