CVE-2023-38702: Knowage Server vulnerable to path traversal via upload functionality

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.2% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2023-08-04 · updated 2026-06-17
Weakness: CWE-22

Description

Knowage is an open source analytics and business intelligence suite. Starting in the 6.x.x branch and prior to version 8.1.8, the endpoint `/knowage/restful-services/dossier/importTemplateFile` allows authenticated users to upload `template file` on the server, but does not need any authorization to be reached. When the JSP file is uploaded, the attacker just needs to connect to `/knowageqbeengine/foo.jsp` to gain code execution on the server. By exploiting this vulnerability, an attacker with low privileges can upload a JSP file to the `knowageqbeengine` directory and gain code execution capability on the server. This issue has been patched in Knowage version 8.1.8.

Affected products

KnowageLabs Knowage-Server: from 6.1.0 before 8.1.8 — fixed in 8.1.8

How to fix

Upgrade to a fixed version: KnowageLabs Knowage-Server 8.1.8. Check the vendor advisory for mitigations.

References

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