CVE-2026-9190

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 v3 9.1 CRITICAL

9.1^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

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

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:progress:marklogic_server::::::::
	cpe:2.3:a:progress:marklogic_server::::::::

History

No history.

Information

Published : 2026-08-05 16:17

Updated : 2026-09-03 14:49

NVD link : CVE-2026-9190

Mitre link : CVE-2026-9190

CVE.ORG link : CVE-2026-9190

JSON object : View

Products Affected

progress

marklogic_server

CWE

CWE-444

Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')

{"id": "CVE-2026-9190", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-9190", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-08-06T00:00:00+00:00"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security@progress.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 9.1, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.2, "exploitabilityScore": 3.9}]}, "affected": [{"source": "security@progress.com", "affectedData": [{"vendor": "Progress Software Corporation", "product": "MarkLogic Server", "versions": [{"status": "affected", "version": "11.0.0", "lessThan": "11.3.6", "versionType": "custom"}, {"status": "affected", "version": "12.0.0", "lessThan": "12.0.3", "versionType": "custom"}], "defaultStatus": "unaffected"}]}], "published": "2026-08-05T16:17:09.940", "references": [{"url": "https://community.progress.com/s/article/Marklogic-Critical-Security-Alert-Bulletin-August-2026", "tags": ["Vendor Advisory"], "source": "security@progress.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "security@progress.com", "description": [{"lang": "en", "value": "CWE-444"}]}], "descriptions": [{"lang": "en", "value": "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."}], "lastModified": "2026-09-03T14:49:36.613", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:progress:marklogic_server:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "10D63D90-CD8D-4F3F-A211-2E954FC03F62", "versionEndExcluding": "11.3.6"}, {"criteria": "cpe:2.3:a:progress:marklogic_server:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "8345B0B6-9047-4E43-B89B-01FFB56CB733", "versionEndExcluding": "12.0.3", "versionStartIncluding": "12.0.0"}], "operator": "OR"}]}], "sourceIdentifier": "security@progress.com"}