CVE-2026-80465CWE-347

CVE-2026-80465

High · published September 3, 2026

CVSS v3.1
8.7
EPSS
0%
Percentile
19.0
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
8.7 · HIGH
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N
CVSS v4.0
8.8 · 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
EPSS
0.00276 · 19.0th percentile
Weakness
CWE-347 · Improper Verification of Cryptographic Signature
Published
2026-09-03T17:06Z
References (1)
https://cert-portal.siemens.com/productcert/html/ssa-887643.html · [email protected]
EPSS history
Timeline
  • 05 SEP 03:44Z
    EPSS moved — → 0%
    epss
  • 03 SEP 11:25Z
    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)…
    cvelistv5