CVE-2021-22967

HIGH
7.5
CVSS Score
Published: November 19, 2021 at 06:11 PM UTC
Updated: June 17, 2026 at 03:38 AM UTC
1 product affected across 1 vendorConcrete CMS

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Severity
HIGH7.5
Exploit prediction
EPSS 1%

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

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v ≤ 8.5.6
Affected range stops below 8.5.7, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-639

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