CVE-2026-80465

State: Published
Severity: 8.8 High
Published: Sep 3, 2026
Updated: Oct 26, 2026
Reserved: Aug 26, 2026

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 9.24 compatible) (All versions < V3.6.29). 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.

Scores

CVSS	Score	Vector	Source
4.0	8.8 High	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	siemens
3.1	8.7 High	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N	siemens

Weaknesses

CWE-347 Improper Verification of Cryptographic Signature

Affected Products

Product	Versions
Mendix SAML (Mendix 10 compatible)Siemens	before V4.2.4Affected
Mendix SAML (Mendix 11 compatible)Siemens	before V4.2.4Affected
Mendix SAML (Mendix 9.24 compatible)Siemens	before V3.6.29Affected

References

https://cert-portal.siemens.com/productcert/html/ssa-887643.html

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.