CVE-2021-22967

HighCVSS 7.5/10Last modified Jun 17, 2026

Description

In Concrete CMS (formerly concrete 5) below 8.5.7, IDOR Allows Unauthenticated User to Access Restricted Files If Allowed to Add Message to a Conversation.To remediate this, a check was added to verify a user has permissions to view files before attaching the files to a message in "add / edit message”.Concrete CMS security team gave this a CVSS v3.1 score of 4.3 AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:NCredit for discovery Adrian H

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Weakness enumeration

CWE-639

Affected software

Vendor	Product	Versions
n/a	https://github.com/concrete5/concrete5	Affected version - Concrete 8.5.6 and below. Fixed version 9.0 and 8.5.7

References

https://documentation.concretecms.org/developers/introduction/version-history/857-release-notesRelease Notes, Vendor Advisory
https://hackerone.com/reports/869612Permissions Required
https://documentation.concretecms.org/developers/introduction/version-history/857-release-notesRelease Notes, Vendor Advisory
https://hackerone.com/reports/869612Permissions Required

Timeline

Published: Nov 19, 2021
Last modified: Jun 17, 2026
NVD status: Modified

Related CVEs from 2021

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