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CVE-2026-9190

Progress Marklogic Server authentication bypass

9.1 CRITICALEPSS 0.74%
  1. Published5 Aug 2026

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.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Affected products

Progress Marklogic Server≥ 12.0.0 < 12.0.3 · < 11.3.6

Remediation

Fixed in
Progress Marklogic Server≥ 12.0.3

References

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Frequently asked

Is CVE-2026-9190 being actively exploited?

CVE-2026-9190 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.74%.

How severe is CVE-2026-9190?

CVE-2026-9190 has a CVSS 3.1 base score of 9.1, rated critical. EPSS estimates a 0.74% probability of exploitation.

Which products are affected by CVE-2026-9190?

Affected products include Progress Marklogic Server.

How do I fix CVE-2026-9190?

Upgrade affected software to a fixed version, for example Progress Marklogic Server 12.0.3 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-9190 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.