---
title: "CVE-2026-85959: Progress MarkLogic Server - Authentication Logging Inconsistency"
description: "Progress MarkLogic Server 12.x < 12.1.0 and 11.x < 11.3.7 contain an audit logging inconsistency caused by failure to consistently record successful authentication events, letting attackers evade detection, exploit requires successful authentication."
url: https://panop.io/threat-heartbeat/CVE-2026-85959/
---

# CVE-2026-85959 Progress MarkLogic Server - Authentication Logging Inconsistency

Progress MarkLogic Server 12.x < 12.1.0 and 11.x < 11.3.7 contain an audit logging inconsistency caused by failure to consistently record successful authentication events, letting attackers evade detection, exploit requires successful authentication.

CVSS base score 7.5 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

EPSS

0.32% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-85959)

## Details

Type

Authentication Logging Inconsistency

Impact

Information Disclosure

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Published

12 October 2026

Updated

15 October 2026

Weakness

[CWE-778](https://cwe.mitre.org/data/definitions/778.html)

## Vendor fix

Upgrade to versions 12.1.0 or 11.3.7 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-85959](https://nvd.nist.gov/vuln/detail/CVE-2026-85959)
- [https://community.progress.com/s/article/Marklogic-Critical-Security-Alert-Bulletin-October-2026](https://community.progress.com/s/article/Marklogic-Critical-Security-Alert-Bulletin-October-2026)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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