CVE-2026-9191

Status: Awaiting AnalysisCritical (9.6)—

Severity9.6Critical · CVSS 3.1

Exploitation probability0.21 %higher than 10% of CVEs

Active exploitationNonot in the CISA catalog

Public exploitNot knownno public code found

Progress MarkLogic Server 12.x releases before 12.1.0 and 11.x releases before 11.3.7 do not sufficiently isolate user-supplied code executed through certain REST and XDBC evaluation paths from HTTP request, response, and session state. An attacker able to execute code through an affected path could perform unauthorized actions or compromise an authenticated session.

CVSS

Base score: 9.6
Version: 3.1
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days: 0.21 %
Percentile among all scored CVEs: 10
Score date: 10/20/2026

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

ATT&CK techniques

How this vulnerability is exploited and what the attacker gains, in MITRE ATT&CK terms.

ExploitationT1203 Exploitation for Client Executionexecution85 %
Primary impactT1059 Command and Scripting Interpreterexecution80 %
Secondary impactT1078 Valid Accountsstealth · persistence · privilege escalation · initial access75 %

Vector CVSS con UI:R (interacción del usuario requerida) apunta a T1203. La ejecución de código no autorizado en REST/XDBC y el compromiso de sesión autenticada (CWE-346) permiten ejecución de comandos e impersonación de usuario.

Inferred by our analysis agent from the official description, CVSS vector and CWE, and checked by a supervisor. May contain errors.

ATT&CK mitigations that cover these techniques

Privileged Account Management Application Developer Guidance Active Directory Configuration User Training User Account Management Restrict Web-Based Content

Affected technologies (1)

⚠ AI-inferred from the description — NVD hasn't analyzed this CVE yet, these aren't verified CPEs.

Progress — Marklogic Server^AI

CWEs

CWE-346

References

Show 1 references

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

Raw JSON (NVD)

Show

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          "options": [
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          "version": "2.0.3",
          "timestamp": "2026-10-14T03:59:40.437005Z"
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          "attackComplexity": "LOW",
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  "lastModified": "2026-10-15T16:27:17.070",
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