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CVE-2026-39934

Growth Experiments ReassignMenteesJob runs as an infinite loop

MEDIUM
6.9
CVSS Score
Published: April 7, 2026 at 10:00 PM UTC
Updated: July 21, 2026 at 07:26 PM UTC
1 product affected across 1 vendorGrowthExperiments

Using Mediawiki - GrowthExperiments Extension by The Wikimedia Foundation?

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Severity
MEDIUM6.9
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

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.

Affected

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

GrowthExperiments· Wikimedia
60%
v < 1.431.431.441.45
Affected range stops below 1.43, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (2)

Source: cverecord
https://phabricator.wikimedia.org/T418222
Source: cverecord
https://gerrit.wikimedia.org/r/c/1243874

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

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

CVSS

6.9MEDIUMwikimedia-foundation
Vector?

Quick Info

StatusAWAITING ANALYSIS
CWE
CWE-835

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