ICSA-26-258-06: Siemens Mendix SAML
CISA advisory · released 2026-09-03
Source record Collected from CISA's CSAF advisory feed
- Distribution label in the document: TLP:WHITE
- Revision 2, 2026-09-15 (final)
CISA's summary
Summary: Mendix SAML module contains a vulnerability that could allow unauthenticated remote attackers to hijack an account in specific SSO configurations. Mendix has provided fix releases for the Mendix SAML module and recommends to update to the latest version.
Products, as the advisory lists them
| Vendor | Product | Version |
|---|---|---|
| Siemens | Mendix SAML (Mendix 10 compatible) | vers:intdot/<4.2.3 |
| Siemens | Mendix SAML (Mendix 11 compatible) | vers:intdot/<4.2.3 |
| Siemens | Mendix SAML (Mendix 9.24 compatible) | vers:intdot/<3.6.27 |
DeSpy has not checked any unit, hardware revision or firmware.
Vulnerabilities in this advisory
- CVE-2026-80465 — CVE-2026-80465 · CWE-347
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.
Acknowledgments, as the advisory lists them
- Siemens ProductCERT: reported this vulnerability to CISA.
The advisory's legal notice
The use of Siemens Security Advisories is subject to the terms and conditions listed on: https://www.siemens.com/productcert/terms-of-use.
Sources
DeSpy's copy of this version is dated 2026-09-28.
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