CVE-2026-7881

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 v3 4.3 MEDIUM

4.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://documentation.concretecms.org/9-x/developers/introduction/version-history/951-release-notes	Release Notes

Configurations

Configuration 1 (hide)

cpe:2.3:a:concretecms:concrete_cms:*:*:*:*:*:*:*:*

History

23 Jul 2026, 16:10

Type	Values Removed	Values Added
Summary		(es) Concrete CMS 9.5.0 y versiones anteriores está sujeto a Referencia Directa Insegura a Objeto (IDOR) en el bloque de Detalle de Entrada Express a través del parámetro exEntryID. Este IDOR conduce a acceso no autorizado a todas las entregas de formularios Express. El equipo de seguridad de Concrete CMS dio a esta vulnerabilidad una puntuación CVSS v.4.0 de 6.3 con el 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. Gracias a Tristan Madani por informar.

22 May 2026, 19:19

Type	Values Removed	Values Added
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 4.3
CPE		cpe:2.3:a:concretecms:concrete_cms::::::::
References	~~() https://documentation.concretecms.org/9-x/developers/introduction/version-history/951-release-notes -~~	() https://documentation.concretecms.org/9-x/developers/introduction/version-history/951-release-notes - Release Notes
First Time		Concretecms concrete Cms Concretecms

21 May 2026, 22:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-05-21 22:16

Updated : 2026-07-23 16:10

NVD link : CVE-2026-7881

Mitre link : CVE-2026-7881

CVE.ORG link : CVE-2026-7881

JSON object : View

Products Affected

concretecms

concrete_cms

CWE

CWE-639

Authorization Bypass Through User-Controlled Key

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