Description
A vulnerability has been identified in Mendix SAML (Mendix 10 compatible) (All versions < V4.2.4), Mendix SAML (Mendix 11 compatible) (All versions < V4.2.4), Mendix SAML (Mendix 9 compatible) (All versions < V3.6.29). Affected versions of the module do not properly protect against SAML assertion replay in IdP-initiated authentication flows. This could allow unauthenticated remote attackers to gain unauthorized access to the application by replaying a valid SAML response.
Published: 2026-10-26
Score: 7.6 High
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Mon, 26 Oct 2026 13:00:00 +0000

Type Values Removed Values Added
Title SAML Assertion Replay Vulnerability in Siemens Mendix SAML Module

Mon, 26 Oct 2026 11:00:00 +0000

Type Values Removed Values Added
Description A vulnerability has been identified in Mendix SAML (Mendix 10 compatible) (All versions < V4.2.4), Mendix SAML (Mendix 11 compatible) (All versions < V4.2.4), Mendix SAML (Mendix 9 compatible) (All versions < V3.6.29). Affected versions of the module do not properly protect against SAML assertion replay in IdP-initiated authentication flows. This could allow unauthenticated remote attackers to gain unauthorized access to the application by replaying a valid SAML response.
Weaknesses CWE-294
References
Metrics cvssV3_1

{'score': 6.8, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N'}

cvssV4_0

{'score': 7.6, 'vector': 'CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N'}

Subscriptions

No data.

cve-icon MITRE

Status: PUBLISHED

Assigner: siemens

Published:

Updated: 2026-10-26T10:41:01.088Z

Reserved: 2026-09-11T07:45:20.919Z

Link: CVE-2026-89209

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-10-26T11:16:38.583

Modified: 2026-10-26T11:16:38.583

Link: CVE-2026-89209

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-26T12:45:14Z

Weaknesses
  • CWE-294

    Authentication Bypass by Capture-replay