CVE-2026-9190
HTTP request smuggling in Progress MarkLogic Server
CVSS Score
9.1
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-444 |
| Vendor | progress software corporation |
| Product | marklogic server |
| Published | Aug 5, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None
Affected Versions
Progress Software Corporation / MarkLogic Server
11.0.0 < 11.3.6 12.0.0 < 12.0.3