CVEvulnerability
CVE-2026-81912
5.7 MEDIUM
Official page ↗
- Status
- Analyzed
- Published
- 2026-09-11
- Last modified
- 2026-09-24
- Assigner
- ff5b8ace-8b95-4078-9743-eac1ca5451de
- CVSS 4.0 (ff5b8ace-8b95-4078-9743-eac1ca5451de)
- 5.7 MEDIUM — CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- CVSS 3.1 ([email protected])
- 5.7 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N
- Weaknesses
- CWE-352
Description
Concrete CMS before 9.5.3 is vulnerable to Cross-Site Request Forgery in the Move Multiple Groups feature. The dashboard/users/groups/bulkupdate/confirm() endpoint moved the selected group tree nodes without validating an action token, so a state-changing group move could be processed for an authenticated user who did not initiate it. Because relocating a group under a new parent causes that group's members to inherit the parent's permissions, a forged move can change effective authorization. The Concrete CMS security team gave this vulnerability a CVSS v4.0 score of 5.7 with vector CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N. Thanks riodrwn for reporting.
Affected configurations
• concretecms concrete cms (< 9.5.4)
Related
Weakness · CWE (1)
- CWE-352 Cross-Site Request Forgery weakness