CVE-2026-9190: CWE-444: Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') in Progress Software Corporation MarkLogic Server
CVE-2026-9190 is a critical HTTP request smuggling vulnerability in Progress Software Corporation's MarkLogic Server HTTP App Server. It affects versions 11.0.0 and 12.0.0. The flaw arises when a crafted HTTP request with both Content-Length and Transfer-Encoding headers causes inconsistent interpretation of request boundaries between a reverse proxy and the server. This can allow a remote attacker to bypass authentication and authorization, hijack user sessions, or capture credentials.
AI Analysis
Technical Summary
This vulnerability (CWE-444) in MarkLogic Server's HTTP App Server occurs due to inconsistent parsing of HTTP requests containing both Content-Length and Transfer-Encoding headers. When a reverse proxy and MarkLogic Server interpret these headers differently, an attacker can smuggle HTTP requests to bypass security controls. The vulnerability affects MarkLogic Server versions 11.0.0 and 12.0.0. The CVSS 3.1 score is 9.1, indicating critical severity with network attack vector, no privileges required, no user interaction, and high impact on confidentiality and integrity.
Potential Impact
An attacker can remotely exploit this vulnerability to bypass authentication and authorization mechanisms, hijack legitimate user sessions, or capture sensitive credentials. This compromises the confidentiality and integrity of the affected system without requiring prior access or user interaction. Availability impact is not indicated.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or temporary workaround is currently documented. Users should monitor Progress Software Corporation advisories for updates and apply patches once available.
CVE-2026-9190: CWE-444: Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') in Progress Software Corporation MarkLogic Server
Description
CVE-2026-9190 is a critical HTTP request smuggling vulnerability in Progress Software Corporation's MarkLogic Server HTTP App Server. It affects versions 11.0.0 and 12.0.0. The flaw arises when a crafted HTTP request with both Content-Length and Transfer-Encoding headers causes inconsistent interpretation of request boundaries between a reverse proxy and the server. This can allow a remote attacker to bypass authentication and authorization, hijack user sessions, or capture credentials.
CVSS v3.1
Score 9.1critical
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CWE-444) in MarkLogic Server's HTTP App Server occurs due to inconsistent parsing of HTTP requests containing both Content-Length and Transfer-Encoding headers. When a reverse proxy and MarkLogic Server interpret these headers differently, an attacker can smuggle HTTP requests to bypass security controls. The vulnerability affects MarkLogic Server versions 11.0.0 and 12.0.0. The CVSS 3.1 score is 9.1, indicating critical severity with network attack vector, no privileges required, no user interaction, and high impact on confidentiality and integrity.
Potential Impact
An attacker can remotely exploit this vulnerability to bypass authentication and authorization mechanisms, hijack legitimate user sessions, or capture sensitive credentials. This compromises the confidentiality and integrity of the affected system without requiring prior access or user interaction. Availability impact is not indicated.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or temporary workaround is currently documented. Users should monitor Progress Software Corporation advisories for updates and apply patches once available.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- ProgressSoftware
- Date Reserved
- 2026-05-21T15:14:35.319Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a7360c9bf8831d539228d67
Added to database: 08/05/2026, 16:11:53 UTC
Last enriched: 08/05/2026, 16:27:20 UTC
Last updated: 08/05/2026, 16:27:20 UTC
Views: 2
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