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TI-2026-64586 Aliases CVE-2026-100240GHSA-3835-4xp5-hjqc

TemplateSandbox does not check read permissions for the page being previewed

Priority MEDIUM 47CWE-862Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-862.

Summary

Missing Authorization vulnerability in Wikimedia Foundation Mediawiki - TemplateSandbox Extension allows Accessing Functionality Not Properly Constrained by ACLs. This issue affects Mediawiki - TemplateSandbox Extension: from * before 1.46.1, 1.45.5, 1.43.10.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00298 22nd percentileScored 2026-11-07
Fix Fixed Mediawiki - TemplateSandbox Extension (Wikimedia Foundation): 1.46.1, 1.45.5, 1.43.10

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
Wikimedia FoundationMediawiki - TemplateSandbox Extensionbefore 1.46.1, 1.45.5, 1.43.101.46.1, 1.45.5, 1.43.10Patch availableCNA
  • Mediawiki - TemplateSandbox Extension VendorWikimedia Foundation Affected before 1.46.1, 1.45.5, 1.43.10 Fixed in 1.46.1, 1.45.5, 1.43.10 Patch available CNA

Remediation

  • Fix · CNA Mediawiki - TemplateSandbox Extension (Wikimedia Foundation) Fixed in 1.46.1, 1.45.5, 1.43.10

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-100240
  2. 2026-10-03 Alias added: GHSA-3835-4xp5-hjqc

References

Other 2

  • 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
See all 255 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences