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Zabbix CVE-2026-23931

| EUVDEUVD-2026-60736 MEDIUM
Observable Discrepancy (CWE-203)
2026-08-18 Zabbix GHSA-9gr5-72qc-m8xc
5.3
CVSS 4.0 · Vendor: Zabbix
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Severity by source

Vendor (Zabbix) PRIMARY
5.3 MEDIUM
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/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:X/V:X/RE:X/U:X
vuln.today AI
4.3 MEDIUM

Network-accessible frontend, low complexity, authenticated user required (PR:L); only confidentiality impact from macro plaintext disclosure, no integrity or availability effect.

3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
SUSE
4.3 MEDIUM
AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Primary rating from Vendor (Zabbix).

CVSS VectorVendor: Zabbix

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
X

Lifecycle Timeline

1
Analysis Generated
Aug 18, 2026 - 13:09 vuln.today

DescriptionCVE.org

The frontend validatate.api.exists action can be exploited by authenticated users to extract plaintext user macro values leading to potential loss of confidentiality.

AnalysisAI

Zabbix frontend information disclosure via the validatate.api.exists action permits authenticated users to extract plaintext user macro values that are otherwise masked in the standard UI. Any account with Zabbix frontend access can invoke this API action to retrieve macro contents, which frequently include embedded credentials, SNMP community strings, API tokens, or other operational secrets. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
technique details hidden
Delivery
technique details hidden
Exploit
technique details hidden
Execution
technique details hidden
Impact
technique details hidden

Vulnerability AssessmentAI

Exploitation Exploitation requires a valid authenticated Zabbix frontend account - at minimum a low-privilege user role, consistent with the CVSS PR:L metric. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 4.0 score of 5.3 (Medium) accurately reflects the bounded scope: the attack requires network access and an authenticated Zabbix frontend account (PR:L), is low complexity with no additional attack prerequisites (AC:L, AT:N), and produces only confidentiality impact on the vulnerable system (VC:L). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation Consult the Zabbix vendor issue tracker at https://support.zabbix.com/browse/ZBX-28070 for patch availability and exact fix versions, which were not independently confirmed in available intelligence - patch status should be verified before assuming a fix is or is not available. … Detailed patch versions, workarounds, and compensating controls in full report.

Threat intelligence, references, and detailed analysis are available after sign-in.

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Vendor StatusVendor

SUSE

Severity: Moderate
Product Status
SUSE Linux Enterprise High Performance Computing 12 SP5 Not-Affected
SUSE Linux Enterprise Server 12 SP5 Not-Affected
SUSE Linux Enterprise Server 12 SP5-LTSS Not-Affected
SUSE Linux Enterprise Server LTSS Extended Security 12 SP5 Not-Affected
SUSE Linux Enterprise High Performance Computing 12 SP3 Not-Affected

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CVE-2026-23931 vulnerability details – vuln.today

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