CVE-2026-8205
Concrete CMS 9.5.0 and below is vulnerable to authorization bypass in the Calendar Block since action_get_events does not check canView on the calendar which results in restricted event details being disclosed. The Concrete CMS security team gave this vulnerability a CVSS v.4.0 score of 6.3 with vector CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N. Thanks lalalala5678 for reporting.
- Affected products
- Concrete Cms
- Concretecms Concrete Cms
- ≤ 9.5.0
- Fix
- Available
- CVSS 4.0
- 6.3 MEDIUM
- CVSS 3.1
- 5.3 MEDIUM
- EPSS
- 0.2% (12th percentile)
- Weakness
- CWE-425
- NVD status
- Analyzed
- Published
- 2026-05-21
CVE-2026-8205 at NVD
No indexed exploits for CVE-2026-8205 yet
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No exploit for CVE-2026-8205 has been indexed yet. Our index is built from live traffic and upstream syncs, so this page can only say what it knows — not that no exploit exists.