What is CVE-2026-8327?

CVE-2026-8327 is a medium-severity vulnerability in Concrete Cms, classified under Improper Privilege Management. CVSS score: 4.3/10. Published 2026-05-21.

How severe is CVE-2026-8327?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Privilege escalation in Concrete Cms

CVE-2026-8327

Concrete CMS below 9.5.0 and below is vulnerable to password change without reauthorization and session-hardening bypass. The user-profile edit controller passes the entire raw POST array to UserInfo::update() without field whitelisting re…

Vulnerability class: Privilege Escalation

EPSS: 0.000 (7.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N.

Affected products

Concrete Cms — versions 5
Concretecms Concrete_cms

Weakness classification (CWE)

CWE-269 — Improper Privilege Management
CWE-620
CWE-915 — Improperly Controlled Modification of Dynamically-Determined Object Attributes

References

ff5b8ace-8b95-4078-9743-eac1ca5451de (release-notes, Release Notes)

Frequently asked questions

What is CVE-2026-8327?: CVE-2026-8327 is a medium-severity vulnerability in Concrete Cms, classified under Improper Privilege Management. CVSS score: 4.3/10. Published 2026-05-21.
How severe is CVE-2026-8327?: Medium severity. CVSS v3 base score is 4.3 out of 10.