CVE-2026-23931

Frontend plaintext macro value enumeration via the validatate.api.exists action

Published Aug 18, 2026 CVSS 4.0 · 5.3 Medium EPSS < 1% KEV · Not listed
Description
The frontend validatate.api.exists action can be exploited by authenticated users to extract plaintext user macro values leading to potential loss of confidentiality.

Remediation

Vendor Solution

Update the affected components to their respective fixed versions.


Vendor Workaround

Macro values with the 'Secret text' or 'Vault secret' types are not affected.

Tracking

Sign in to view the affected projects.

Advisories

No advisories available
History
Type Values Removed Values Added
CPEs cpe:2.3:a:zabbix:zabbix:*:*:*:*:*:*:*:*
Metrics cvssV3_1

{'score': 4.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N'}

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Zabbix
Zabbix zabbix
Vendors & Products Zabbix
Zabbix zabbix
Type Values Removed Values Added
Description The frontend validatate.api.exists action can be exploited by authenticated users to extract plaintext user macro values leading to potential loss of confidentiality.
Title Frontend plaintext macro value enumeration via the validatate.api.exists action
Weaknesses CWE-203
References
Metrics cvssV4_0

{'score': 5.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
Zabbix
Published
Updated
Aug 18, 2026, 1:35 PM
Reserved
Jan 19, 2026, 2:03 PM
Status
Analyzed
Published
Aug 18, 2026, 1:17 PM
Modified
Sep 23, 2026, 2:38 PM