CVE-2026-23937Network attack vector

Authenticated PSK disclosure via host.get

Published Aug 18, 2026 · Updated Aug 18, 2026

Improper access control in the host.get API action in Zabbix before 6.0.47, 7.0.28, and 7.4.12 allows remote authenticated users to read a host PSK. The host.get action exposes stored pre-shared key material in API output to callers retrieving host details, returning secret data that should remain hidden or require stronger privilege. Reachability requires valid Zabbix API or Frontend access, but disclosure of a host PSK can support forged agent or proxy authentication and integrity impact in deployments that rely on PSK-based TLS.

CVSS severity6.0
Medium
EPSS probability0.28%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper access control in the host.get API action in Zabbix before 6.0.47, 7.0.28, and 7.4.12 allows remote authenticated users to read a host PSK. The host.get action exposes stored pre-shared key material in API output to callers retrieving host details, returning secret data that should remain hidden or require stronger privilege. Reachability requires valid Zabbix API or Frontend access, but disclosure of a host PSK can support forged agent or proxy authentication and integrity impact in deployments that rely on PSK-based TLS.

The record

CVE
CVE-2026-23937
Published
Aug 18, 2026
Updated
Aug 18, 2026
Vendor
Zabbix
Product
Zabbix
Classifications
CWE-203
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 18, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 18, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=6.0.0 <=6.0.46 changes=[{"at":"6.0.47","status":"unaffected"}]
  2. Affected versionversion=7.0.0 <=7.0.27 changes=[{"at":"7.0.28","status":"unaffected"}]
  3. Affected versionversion=7.4.0 <=7.4.11 changes=[{"at":"7.4.12","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Zabbix · Zabbixversion=6.0.0 <=6.0.46 changes=[{"at":"6.0.47","status":"unaffected"}]; version=7.0.0 <=7.0.27 changes=[{"at":"7.0.28","status":"unaffected"}]; version=7.4.0 <=7.4.11 changes=[{"at":"7.4.12","status":"unaffected"}]

Published CVSS scores

6.0ZabbixCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-203Observable Discrepancy

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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