CVE-2026-9190 Details
Description
An HTTP request smuggling vulnerability in the HTTP App Server of Progress MarkLogic Server before 11.3.6 and 12.0.3 allows a remote attacker to bypass authentication and authorization checks, hijack a legitimate user's session, or capture credentials. The vulnerability occurs when a crafted HTTP request containing both Content-Length and Transfer-Encoding headers causes a reverse proxy and MarkLogic Server to interpret request boundaries differently.
A vulnerability allowing HTTP request smuggling has been identified in the HTTP App Server of Progress MarkLogic Server. This issue affects versions prior to 11.3.6 and 12.0.3. The vulnerability allows remote attackers to bypass authentication and authorization checks, hijack the sessions of legitimate users, or capture credentials. The issue arises when a crafted HTTP request that includes both Content-Length and Transfer-Encoding headers causes a reverse proxy and MarkLogic Server to misinterpret request boundaries.
Users are advised to upgrade to MarkLogic Server versions 12.0.3 or 11.3.6. Instructions for upgrading from previous releases are available in the MarkLogic Server documentation. Customers on Progress Data Cloud have already been patched and are no longer vulnerable.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Aug 6, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://community.progress.com/s/article/Marklogic-Critical-Security-Alert-Bulletin-August-2026 | [email protected] | Vendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-444 | Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| progress marklogic server | < 11.3.6 >= 12.0.0, < 12.0.3 |
CPE
Remediation
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Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Sep 3, 2026 | Reanalysis | [email protected] |
| Sep 3, 2026 | Initial Analysis | [email protected] |
| Aug 7, 2026 | CVE Modified | CISA-ADP |
| Aug 5, 2026 | CVE Modified | CISA-ADP |
| Aug 5, 2026 | New CVE Received | [email protected] |