CVE-2026-9191 PUBLISHED

Insufficient isolation of user-supplied code in Progress MarkLogic Server

Assigner: ProgressSoftware
Reserved: 21.05.2026 Published: 12.10.2026 Updated: 12.10.2026

Progress MarkLogic Server 12.x releases before 12.1.0 and 11.x releases before 11.3.7 do not sufficiently isolate user-supplied code executed through certain REST and XDBC evaluation paths from HTTP request, response, and session state. An attacker able to execute code through an affected path could perform unauthorized actions or compromise an authenticated session.

Metrics

CVSS 3.1

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
CVSS Score: 9.6

Attack Vector	Network	Scope	Changed
Attack Complexity	Low	Confidentiality Impact	High
Privileges Required	None	Integrity Impact	High
User Interaction	Required	Availability Impact	High

CVSS 3.1

Product Status

Vendor	Progress Software Corporation
Product	MarkLogic Server
Versions	Default: unaffected affected from 11.0.0 to 11.3.7 (excl.) affected from 12.0.0 to 12.1.0 (excl.)

Credits

WaltWhitehat via Bugcrowd finder

References

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

Problem Types

CWE-346: Origin Validation Error CWE