CVE-2026-100240
Wikimedia Foundation Mediawiki - TemplateSandbox Extension
- Wikimedia Foundation Mediawiki - TemplateSandbox Extension
- Critical
- CVSS 9.1
- EPSS 0.3%
- Fixed version listed
What to do
Fixed version listed
Affected products
| Product | Affected | Fixed in |
|---|---|---|
| Wikimedia Foundation Mediawiki - TemplateSandbox Extension | from *, before 1.46.1, 1.45.5, 1.43.10 | 1.46.1, 1.45.5, 1.43.10 |
Scores and signals
- Exploitation
- No known exploitation
- Severity
- Critical, CVSS 9.1 (v3.1, scored by CISA-ADP)
- EPSS
- 0.3% chance of exploitation in the next 30 days (EPSS from FIRST, as of Oct 26, 2026)
- CISA's SSVC decision points
- Exploitation: none. Automatable: yes. Technical impact: total. As of Oct 1, 2026.
- Weakness
- CWE-862: Missing Authorization
- Vendor
- Wikimedia Foundation, Mediawiki - TemplateSandbox Extension
Timeline
- First listed as critical by cve.now. Affected and fixed versions come from the CVE record, once one is published.