CVE-2026-9190

CRITICAL
INFO Priority: 0.07 BB Relevance: 78/100
Published: 2026-08-05 Modified: 2026-10-24 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Auth No Interaction Conf. Impact Integ. Impact

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: None
S: Unchanged
C: High
I: High
A: None

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.

Weakness Classification (1)

Affected Software (2)

VendorProductVersion
progress marklogic_server < 11.3.6
progress marklogic_server 12.0.0 – 12.0.3

Bug Bounty Relevance

78 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

9.1 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

EPSS — Exploitation Probability

0.74%
Raw Score 0.007370
Percentile 54.4%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00737
2026-10-28
0.00737

Intelligence Sources

nvd ref →