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CVE-2026-8327

4.3 MEDIUM

Concrete CMS below 9.5.0 and below is vulnerable to password change without reauthorization and session-hardening bypass

Published: 2026-05-21 · Last updated: 2026-05-26

Severity and scoring

CVSS
4.3 MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
CWE
CWE-269, CWE-620, CWE-915

Affected products

VendorProduct
concretecmsconcrete_cms

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.

Source: NVD

References

Related CVEs

Same vendor

  • CVE-2026-8340 — Concrete CMS 9.5.0 and below is vulnerable to CSRF via Backend\File::approveVersion (4.3 MEDIUM)
  • CVE-2026-8434 — Concrete CMS 9 before 9.5.0 is vulnerable to Cross Site Request Forgery (CSRF) at concrete/controllers/backend/file rescanMultiple() (8.8 HIGH)
  • CVE-2026-8433 — Concrete CMS 9 before 9.5.0 is vulnerable to Cross Site Request Forgery (CSRF) at concrete/controllers/backend/file rescan() (8.8 HIGH)
  • CVE-2026-8432 — Concrete CMS 9 before 9.5.0 is vulnerable to Cross Site Request Forgery (CSRF) at concrete/controllers/backend/file star() (8.8 HIGH)
  • CVE-2026-8427 — Concrete CMS 9 before 9.5.0 is vulnerable to Cross Site Request Forgery (CSRF) at concrete/controllers/backend/file removeFavoriteFolder(... (8.8 HIGH)

Same CWE

  • CVE-2026-50570 — Fission is an open-source, Kubernetes-native serverless framework that simplifies the deployment of functions and applications on Kubernetes (8.5 HIGH)
  • CVE-2026-50566 — Fission is an open-source, Kubernetes-native serverless framework that simplifies the deployment of functions and applications on Kubernetes (9.9 CRITICAL)
  • CVE-2026-50565 — Fission is an open-source, Kubernetes-native serverless framework that simplifies the deployment of functions and applications on Kubernetes (4.9 MEDIUM)
  • CVE-2026-50564 — Fission is an open-source, Kubernetes-native serverless framework that simplifies the deployment of functions and applications on Kubernetes (9.9 CRITICAL)
  • CVE-2026-50563 — Fission is an open-source, Kubernetes-native serverless framework that simplifies the deployment of functions and applications on Kubernetes (9.9 CRITICAL)