CVE-2026-89209

MEDIUM
MEDIUM Priority: 0.02 BB Relevance: 54/100
Published: 2026-10-26 Modified: 2026-10-26 First seen: 2026-10-29 Status: active

Attack Surface

Network No Auth Conf. Impact Integ. Impact

CVSS Vector Breakdown

AV: Network
AC: High
PR: None
UI: Required
S: Unchanged
C: High
I: High
A: None

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.

Weakness Classification (1)

Bug Bounty Relevance

54 / 100
✓ Network accessible
✓ No authentication

CVSS Score

6.8 / 10.0 v3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N

EPSS — Exploitation Probability

0.26%
Raw Score 0.002590
Percentile 17.7%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00259
2026-10-28
0.00259

Intelligence Sources

mitre ref →
nvd ref →