CVE-2026-8327MEDIUMCVSS 0.0

Concrete CMS has a session-hardening bypass and allows password change without reauthorization

Published May 22, 2026·Updated Jun 24, 2026

Description

Concrete CMS 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 resulting in password change without requiring the current password  and also resulting in registered users able to disable the per-user-IP-pinning in the session validator which is meant to detect hijacking.

Affected Packages (1)

concrete5/concrete5COMPOSER
Fixed in 9.5.1

References

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