GitHub Advisoryadvisory · Packagist

GHSA-58c8-vvqw-cm7m Concrete CMS is vulnerable to IDOR combined with a missing authentication gate

MEDIUM Published 2026-05-22 Modified 2026-06-24 Official page ↗
Aliases
CVE-2026-8236
Ecosystem
Packagist
Packages
concrete5/concrete5
Severity
Moderate
CVSS 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
Weaknesses
CWE-862
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 IDOR combined with a missing authentication gate. The endpoint /ccm/system/dialogs/file/usage/{fID} accepts an integer file ID in the URL and returns internal site structure data (page IDs, versions, URL paths) to anyone who sends a GET request.

Related

Alias · CVE (1)

  • CVE-2026-8236 Concrete CMS 9.5.0 and below is vulnerable to IDOR combined with a missing authentication gate. vulnerability

Weakness · CWE (1)

  • CWE-862 Missing Authorization weakness

References