CVE-2026-85962: Improper authentication in Progress MarkLogic Server SAML processing

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-10-12 · updated 2026-10-15
Weakness: CWE-287

Description

Progress MarkLogic Server 12.x releases before 12.1.0 and 11.x releases before 11.3.7 contain an improper authentication vulnerability in SAML processing. In deployments that use SAML authentication, an unauthenticated remote attacker could cause the affected server to accept an assertion that should be rejected, potentially resulting in unauthorized access.

Affected products

Progress Software Corporation MarkLogic Server: from 11.0.0 before 11.3.7; from 12.0.0 before 12.1.0 — fixed in 11.3.7, 12.1.0

How to fix

Upgrade to a fixed version: Progress Software Corporation MarkLogic Server 11.3.7, 12.1.0. Check the vendor advisory for mitigations.

References

https://community.progress.com/s/article/Marklogic-Critical-Security-Alert-Bulletin-October-2026

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