CVE-2026-23927
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Oracle TNS Connection String Injection in Zabbix Agent 2

Publication date: 2026-05-06

Last updated on: 2026-05-06

Assigner: Zabbix

Description
A user able to connect to Agent 2 can inject an Oracle TNS connection string via the 'service' parameter. This can lead to Agent 2 connecting to an attacker-controlled server and leaking Oracle database credentials if they are saved in a named session.

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Meta Information

Published
2026-05-06
Last Modified
2026-05-06
Generated
2026-07-06
AI Q&A
2026-05-06
EPSS Evaluated
2026-07-05
NVD
CVE-2026-23927
EUVD
EUVD-2026-27528

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
oracle tns *

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-522 The product transmits or stores authentication credentials, but it uses an insecure method that is susceptible to unauthorized interception and/or retrieval.

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Executive Summary

This vulnerability allows a user who can connect to Agent 2 to inject an Oracle TNS connection string through the 'service' parameter.

As a result, Agent 2 may connect to an attacker-controlled server and leak Oracle database credentials if those credentials are saved in a named session.

Impact Analysis

The vulnerability can lead to unauthorized disclosure of Oracle database credentials.

An attacker could exploit this to gain access to sensitive database information by causing Agent 2 to connect to a malicious server.

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