Growth Experiments ReassignMenteesJob runs as an infinite loop
Priority LOW 36CWE-835Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- Low · Low · Low
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-835.
Summary
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 was remediated only on the `master` branch.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00332 26th percentileScored 2026-11-07
Fix Fixed Mediawiki - GrowthExperiments Extension (The Wikimedia Foundation): 1.43
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Wikimedia Foundation | Mediawiki - GrowthExperiments Extension | 1.45 and later; 1.44 and later; 1.43 and later; before 1.43 | 1.43 | Patch available | CNA |
- Mediawiki - GrowthExperiments Extension VendorWikimedia Foundation Affected 1.45 and later; 1.44 and later; 1.43 and later; before 1.43 Fixed in 1.43 Patch available CNA
Remediation
- Fix · CNA Mediawiki - GrowthExperiments Extension (The Wikimedia Foundation) Fixed in 1.43
Timeline
- 2026-10-02 Threatist record created from CVE-2026-39934
- 2026-10-03 Alias added: GHSA-cgh3-rgf8-476j
More Wikimedia Foundation vulnerabilities
- TI-2025-11006 The compare API module breaks Extension:Lockdown CVSS 4.0CRITICAL 10.0
- TI-2024-32110 Backticks can allow the usage of not-allowed SQL functions CVSS 4.0HIGH 8.8
- TI-2026-65500 Unauthenticated SQL injection in UserPageViewTracker via filterusers and ignoreusers parameters CVSS 3.1HIGH 7.5
- TI-2026-64588 DataTransfer depends on phpspreadsheet version vulnerable to CVE-2026-59933 (XLS/OLE memory exhaustion) CVSS 3.1HIGH 7.5
- TI-2026-42112 SQLi in Cargo extension via year range filter CVSS 4.0MEDIUM 6.9
- TI-2026-42110 Stored XSS through Cargo's map format CVSS 4.0MEDIUM 6.9
Sources
- CVE-2026-39934 · CVE Program
- CVE-2026-39934 · NVD
- FIRST EPSS
- GHSA-cgh3-rgf8-476j · GitHub Advisory Database · CC BY 4.0
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