GitHub Advisoryadvisory · Packagist

GHSA-46xh-7854-f568 Concrete CMS is vulnerable to authorization bypass in the Calendar Block

MEDIUM Published 2026-05-21 Modified 2026-06-24 Official page ↗
Aliases
CVE-2026-8205
Ecosystem
Packagist
Packages
concrete5/concrete5
Severity
Moderate
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Weaknesses
CWE-425
Reviewed
2026-06-24

Affected packages

• Packagist concrete5/concrete5: < 9.5.1 → fixed in 9.5.1

Description

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.

Related

Alias · CVE (1)

  • 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… vulnerability

Weakness · CWE (1)

References