CVE-2026-23922 PUBLISHED

Email media OAuth secret leak to Super Admin

Assigner: Zabbix
Reserved: 19.01.2026 Published: 18.08.2026 Updated: 18.08.2026

The email media OAuth field 'Client secret' cannot be read after saving, but a Super Admin can leak it by setting a malicious 'Token endpoint'. Changes were made to reset the client secret upon changing the token endpoint.

Metrics

CVSS 4.0

CVSS Vector: CVSS: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 Score: 2.1

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	Low	Confidentiality	None
Attack Complexity	Low	Integrity	None	Integrity	None
Attack Requirements	Present	Availability	None	Availability	None
Privileges Required	High
User Interaction	None

CVSS 4.0

Product Status

Vendor	Zabbix
Product	Zabbix
Versions	Default: unknown affected from 7.4.0 to 7.4.8 (incl.)

Affected Configurations

A Zabbix Super Admin setting a malicious OAuth token endpoint.

Solutions

Update the affected components to their respective fixed versions.

Credits

Zabbix wants to thank sebiee for submitting this report on the HackerOne bug bounty platform. reporter

References

https://support.zabbix.com/browse/ZBX-28067

Problem Types

CWE-522: Insufficiently Protected Credentials CWE

Impacts

CAPEC-194: Fake the Source of Data