CVE-2026-7881
MEDIUMConcrete CMS 9.5.0 and below is vulnerable to IDOR in the Express Entry Detail block
Title source: cnaDescription
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.
References (1)
Core 1
Core References
Release Notes release-notes
https://documentation.concretecms.org/9-x/developers/introduction/version-history/951-release-notes
Scores
CVSS v3
4.3
EPSS
0.0020
EPSS Percentile
10.4%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-639
Status
published
Products (2)
Concrete CMS/Concrete CMS
5.0 - 9.5.0
concretecms/concrete_cms
< 9.5.1
Published
May 21, 2026
Tracked Since
May 22, 2026