CVE-2026-7881
Received
Received - Intake
Insecure Direct Object Reference in Concrete CMS
Publication date: 2026-05-21
Last updated on: 2026-05-21
Assigner: ConcreteCMS
Description
Description
Concrete CMS 9.5.0 and below is subject to Insecure Direct Object Reference (IDOR) in the Express Entry Detail block via the exEntryID parameter. This IDOR leads to unauthorized access to all Express form submissions. The Concrete CMS security team gave this vulnerability a CVSS v.4.0 score of 6.3 with 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. Thanks Tristan Madani for reporting.
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| concrete_cms | concrete_cms | to 9.5.1 (exc) |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-639 | The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability is an Insecure Direct Object Reference (IDOR) found in Concrete CMS version 9.5.0 and below. It occurs in the Express Entry Detail block through the exEntryID parameter. Because of this flaw, an attacker can gain unauthorized access to all Express form submissions.
How can this vulnerability impact me? :
The impact of this vulnerability is that unauthorized users can access sensitive data submitted through Express forms in Concrete CMS. This could lead to exposure of confidential or personal information that was intended to be protected.
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