CVE-2026-9190

critical · 9.1

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.

9.1

CVSS

0.4%

EPSS (exploit prob.)

36th

EPSS percentile

2026-08-05

Published

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Weaknesses

CWE-444

Affected products

Vendor	Product	Affected versions
progress	marklogic_server	< 11.3.6
progress	marklogic_server	>= 12.0.0, < 12.0.3

Check a specific version with /api/v1/cve/match.

References

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

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-9190