CVE-2026-68533
Concrete CMS below 9.5.3 conversation attachment uploaded endpoint imported files into the file manager before evaluating the "Add Message Attachments" permission, which was only checked after the file had been stored. A user denied that permission, or an unauthenticated visitor on a guest-posting configuration, could import approved files of allowed types into the file manager. The Concrete CMS security team gave this vulnerability a CVSS v4.0 score of 2.3 with vector CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N. Thanks riodrwn for reporting.
Scoring
- Severity
- LOW
- CVSS base score
- 2.3
- CVSS vector
- CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N
- EPSS probability
- 0.26%
- CWE
- CWE-862
- Published
- 2026-09-15
- Last modified
- 2026-09-15
Affected products
- Concrete CMS Concrete CMS
Weakness type
Related vulnerabilities
- CVE-2026-8821 — Playbooks run owner channel membership permission bypass
- CVE-2026-20324 — Cisco Secure Firewall Management Center sftunnel Root Arbitrary Code Exectution Vulnerability
- CVE-2026-57139 — PraisonAI MCPServer exposes unauthenticated HTTP tools/call
- CVE-2026-75030 — Apache Syncope: Incomplete authorization checks for Group members deprovisioning
- CVE-2026-57131 — praisonai: Jobs API exposes agent-execution endpoints with no authentication
- CVE-2026-14349 — TrueBooker <= 1.2.3 - Missing Authorization to Unauthenticated Arbitrary User Email Modification via 'admin_addcustomer' AJAX Action
- CVE-2026-66887 — Missing Authorization in Digital Watchdog VMAX DVR and NVR Product Lineups
- CVE-2026-38056 — ST Engineering iDirect iQ-Series Terminals Missing Authorization