CVE-2026-23922Network attack vector

Client secret disclosure via token endpoint

Published Aug 18, 2026 · Updated Aug 18, 2026

Credential exposure in Zabbix 7.4.0 through 7.4.8 allows remote authenticated users to disclose an OAuth client secret via a token endpoint. In the email media OAuth frontend, the saved client secret remains reusable after the Token endpoint is edited, so a Super Admin can repoint token requests to an attacker-controlled endpoint and have the secret sent there. Exploitation requires Super Admin access to the Zabbix frontend and affects confidentiality of the configured OAuth integration, with no published ability to alter data or interrupt monitoring.

CVSS severity2.1
Low
EPSS probability0.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Credential exposure in Zabbix 7.4.0 through 7.4.8 allows remote authenticated users to disclose an OAuth client secret via a token endpoint. In the email media OAuth frontend, the saved client secret remains reusable after the Token endpoint is edited, so a Super Admin can repoint token requests to an attacker-controlled endpoint and have the secret sent there. Exploitation requires Super Admin access to the Zabbix frontend and affects confidentiality of the configured OAuth integration, with no published ability to alter data or interrupt monitoring.

The record

CVE
CVE-2026-23922
Published
Aug 18, 2026
Updated
Aug 18, 2026
Vendor
Zabbix
Product
Zabbix
Classifications
CWE-522
Attack vector
network
Privileges
admin

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=7.4.0 <=7.4.8 changes=[{"at":"7.4.9","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Zabbix · Zabbixversion=7.4.0 <=7.4.8 changes=[{"at":"7.4.9","status":"unaffected"}]

Published CVSS scores

2.1ZabbixCVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:L/VI:N/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-522Insufficiently Protected Credentials

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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