A vulnerability has been identified in Mendix SAML (Mendix 10 compatible) (All versions < V4.2.3), Mendix SAML (Mendix 11 compatible) (All versions < V4.2.3), Mendix SAML (Mendix 9.24 compatible) (All versions < V3.6.27). Affected versions of the module do not properly validate the SAML response signature. This could allow unauthenticated remote attackers to hijack an account (session) in specific SSO configurations.

Attack Vector Network

Attack Complexity High

Privileges Required None

Attack Requirements Present

User Interaction Passive

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact High

Subsequent System Integrity Impact High

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity High

Privileges Required None

Scope Changed

Confidentiality Impact High

Integrity Impact High

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Exploitation none

Automatable no

Technical Impact total

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Siemens Mendix SAML (Mendix 10 compatible) unknown
Version Status Constraints
0 affected < V4.2.3
Siemens Mendix SAML (Mendix 11 compatible) unknown
Version Status Constraints
0 affected < V4.2.3
Siemens Mendix SAML (Mendix 9.24 compatible) unknown
Version Status Constraints
0 affected < V3.6.27

No data.

No data.

OpenCVE Enrichment is a feature of OpenCVE that uses AI to automatically link vendors and products to CVEs. Learn more on GitHub.

Vendors Products
Siemens Subscribe
Mendix Saml (mendix 10 Compatible) Subscribe
Mendix Saml (mendix 11 Compatible) Subscribe
Mendix Saml (mendix 9.24 Compatible) Subscribe

Project Subscriptions

Vendors Products
Siemens Subscribe
Mendix Saml (mendix 10 Compatible) Subscribe
Mendix Saml (mendix 11 Compatible) Subscribe
Mendix Saml (mendix 9.24 Compatible) Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://cert-portal.siemens.com/productcert/html/ssa-887643.html cve-icon cve-icon
History

Thu, 03 Sep 2026 19:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Thu, 03 Sep 2026 16:00:00 +0000

Type Values Removed Values Added
First Time appeared Siemens
Siemens mendix Saml (mendix 10 Compatible)
Siemens mendix Saml (mendix 11 Compatible)
Siemens mendix Saml (mendix 9.24 Compatible)
Vendors & Products Siemens
Siemens mendix Saml (mendix 10 Compatible)
Siemens mendix Saml (mendix 11 Compatible)
Siemens mendix Saml (mendix 9.24 Compatible)

Thu, 03 Sep 2026 13:00:00 +0000

Type Values Removed Values Added
Title Mendix SAML Module Fails to Validate SAML Response Signature, Allowing Session Hijacking

Thu, 03 Sep 2026 11:30:00 +0000

Type Values Removed Values Added
Description A vulnerability has been identified in Mendix SAML (Mendix 10 compatible) (All versions < V4.2.3), Mendix SAML (Mendix 11 compatible) (All versions < V4.2.3), Mendix SAML (Mendix 9.24 compatible) (All versions < V3.6.27). Affected versions of the module do not properly validate the SAML response signature. This could allow unauthenticated remote attackers to hijack an account (session) in specific SSO configurations.
Weaknesses CWE-347
References
Metrics cvssV3_1

{'score': 8.7, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N'}

cvssV4_0

{'score': 8.8, 'vector': 'CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N'}

Projects

Sign in to view the affected projects.

cve-icon MITRE

Status: PUBLISHED

Assigner: siemens

Published:

Updated: 2026-09-03T18:15:38.743Z

Reserved: 2026-08-26T12:49:28.232Z

Link: CVE-2026-80465

cve-icon Vulnrichment

Updated: 2026-09-03T18:15:33.754Z

cve-icon NVD

Status : Received

Published: 2026-09-03T13:06:10.877

Modified: 2026-09-03T19:17:29.117

Link: CVE-2026-80465

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-03T15:33:15Z

Weaknesses