CVE-2026-9203

High

Description

A server-side request forgery vulnerability in Progress MarkLogic Server before 11.3.6 and 12.0.3 allows an authenticated user with low-privileged roles to bypass protections for cloud instance metadata endpoints. Successful exploitation can disclose cloud credentials and compromise cloud resources accessible to the host instance.

SeverityHigh

CVSS8.5

Exploit probability—

Product

Progress Marklogic Server

PublishedAug 5, 2026

First seenAug 5, 2026

Weakness typeCWE-918Server-side request forgery (SSRF)

How to fix

Update

progress marklogic_server11.3.6, 12.0.3 or later

Vendor advisories

community.progress.com/s/article/Marklogic-Critical-Security-Alert-Bulletin-August-2026

Affected products

Product	Affected versions	Fixed in
progress marklogic_server	v < 11.3.6, 12.0.0 ≤ v < 12.0.3	11.3.6, 12.0.3

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