EUVD-2026-19978

| CVE-2026-39934 MEDIUM
2026-04-07 wikimedia-foundation GHSA-cgh3-rgf8-476j
6.9
CVSS 4.0
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CVSS Vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
X

Lifecycle Timeline

3
EUVD ID Assigned
Apr 07, 2026 - 22:16 euvd
EUVD-2026-19978
Analysis Generated
Apr 07, 2026 - 22:16 vuln.today
CVE Published
Apr 07, 2026 - 22:00 nvd
MEDIUM 6.9

Tags

Denial Of Service

Description

Loop with unreachable exit condition ('infinite loop') vulnerability in The Wikimedia Foundation Mediawiki - GrowthExperiments Extension allows Leveraging Time-of-Check and Time-of-Use (TOCTOU) Race Conditions.This issue affects Mediawiki - GrowthExperiments Extension: 1.45.2, 1.44.4, 1.43.7.

Analysis

Infinite loop vulnerability in Wikimedia MediaWiki GrowthExperiments Extension (versions 1.45.2, 1.44.4, 1.43.7) allows unauthenticated remote attackers to trigger a denial of service condition by exploiting a Time-of-Check and Time-of-Use (TOCTOU) race condition that causes unreachable loop exit logic. The vulnerability has a CVSS score of 6.9 with low confidentiality, integrity, and availability impact across all scopes. …

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Priority Score

35
Low Medium High Critical
KEV: 0
EPSS: +0.0
CVSS: +34
POC: 0

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EUVD-2026-19978 vulnerability details – vuln.today
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