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.
- Affected products
- Concrete Cms
- Concretecms Concrete Cms
- < 9.5.1
- Fix
- Available
- CVSS 4.0
- 6.3 MEDIUM
- CVSS 3.1
- 4.3 MEDIUM
- EPSS
- 0.2% (11th percentile)
- Weakness
- CWE-639
- NVD status
- Analyzed
- Published
- 2026-05-21
- Attack patterns
- CAPEC-1
CVE-2026-7881 at NVD
No indexed exploits for CVE-2026-7881 yet
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No exploit for CVE-2026-7881 has been indexed yet. Our index is built from live traffic and upstream syncs, so this page can only say what it knows — not that no exploit exists.