CVE-2026-80465

HIGH

8.7

CVSS Score

Published: September 3, 2026 at 11:25 AM UTC

Updated: October 26, 2026 at 11:16 AM UTC

1 product affected across 1 vendorMendix Saml

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Severity

HIGH8.7

Exploit prediction

EPSS 0.3%

SSVC

No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Mendix Saml · Siemens

90%

All versions

Affected range stops below V3.6.27, so it looks safe — our inference, not a vendor statement

Affected range stops below V4.2.3, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

Source: cverecord

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

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.7HIGHsiemens

Vector?

Quick Info

StatusDEFERRED

CWE

CWE-347

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