What is CVE-2026-85958?

CVE-2026-85958 is a high-severity vulnerability in Progress Software Corporation Marklogic Server, classified under Improper Authentication. CVSS score: 7.5/10. Published 2026-10-12.

How severe is CVE-2026-85958?

High severity. CVSS v3 base score is 7.5 out of 10.

Auth bypass in Progress Software Corporation Marklogic Server

CVE-2026-85958

Progress MarkLogic Server 12.x releases before 12.1.0 and 11.x releases before 11.3.7 contain an authentication validation weakness that could allow an attacker to use a token that should not be accepted by the affected server, which could result in unauthorized access.

Vulnerability class: Broken Authentication

Published 2026-10-12.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Progress Software Corporation Marklogic Server

Weakness classification (CWE)

CWE-287 — Improper Authentication

References

community.progress.com/s/article/Marklogic-Critical-Security-Alert-Bulletin-Oct… (vendor-advisory)

Frequently asked questions

What is CVE-2026-85958?: CVE-2026-85958 is a high-severity vulnerability in Progress Software Corporation Marklogic Server, classified under Improper Authentication. CVSS score: 7.5/10. Published 2026-10-12.
How severe is CVE-2026-85958?: High severity. CVSS v3 base score is 7.5 out of 10.