CVE-2026-8327
Description
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 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. The Concrete CMS security team gave this vulnerability a CVSS v.4.0 score of 5.3 with vector CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N. Thanks 0x4c616e for reporting.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
concrete5/concrete5Packagist | < 9.5.1 | 9.5.1 |
Affected products
3- Range: <9.5.0
Patches
Vulnerability mechanics
References
3- github.com/advisories/GHSA-wmw3-3fv3-h54wghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-8327ghsaADVISORY
- documentation.concretecms.org/9-x/developers/introduction/version-history/951-release-notesnvdRelease NotesWEB
News mentions
1- Concrete CMS: 25 CVEs Disclosed Together, 12 High-Severity CSRF Bugs Lead the BatchVypr Intelligence · May 22, 2026