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Vulnerability record · CVE-2026-23927 · published 6 May 2026

CVE-2026-23927: Zabbix insufficiently protected credentials vulnerability

Zabbix · Zabbix

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.

5.1 CVSS 4.0 Medium EPSS 0.22% · top 88.5% CWE-522 · Insufficiently protected credentials
5.1CVSS 4.0 base score
0.22%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
1References
18 Sep 2026Last modified by NVD

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.

CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:N/VI:L/VA:N/SC:H/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://support.zabbix.com/browse/ZBX-27759 Vendor Advisory

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-23927), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.