A Zabbix Super Admin setting a malicious OAuth token endpoint.
"}],"value":"A Zabbix Super Admin setting a malicious OAuth token endpoint."}],"credits":[{"lang":"en","type":"reporter","value":"Zabbix wants to thank sebiee for submitting this report on the HackerOne bug bounty platform."}],"descriptions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"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.
"}],"value":"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."}],"impacts":[{"capecId":"CAPEC-194","descriptions":[{"lang":"en","value":"CAPEC-194: Fake the Source of Data"}]}],"metrics":[{"cvssV4_0":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"PRESENT","attackVector":"NETWORK","baseScore":2.1,"baseSeverity":"LOW","exploitMaturity":"NOT_DEFINED","privilegesRequired":"HIGH","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"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","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":"NONE","vulnerabilityResponseEffort":"NOT_DEFINED"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-522","description":"CWE-522: Insufficiently Protected Credentials","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-08-18T12:13:38.438Z","orgId":"72de3e22-0555-4a0d-ae81-9249e0f0a1e8","shortName":"Zabbix"},"references":[{"url":"https://support.zabbix.com/browse/ZBX-28067"}],"solutions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"Update the affected components to their respective fixed versions.
"}],"value":"Update the affected components to their respective fixed versions."}],"source":{"discovery":"EXTERNAL"},"title":"Email media OAuth secret leak to Super Admin","x_generator":{"engine":"Vulnogram 1.0.4"}}},"cveMetadata":{"assignerOrgId":"72de3e22-0555-4a0d-ae81-9249e0f0a1e8","assignerShortName":"Zabbix","cveId":"CVE-2026-23922","datePublished":"2026-08-18T12:13:38.438Z","dateReserved":"2026-01-19T14:02:54.327Z","dateUpdated":"2026-08-18T16:02:15.215Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-08-18 13:17:21","lastModifiedDate":"2026-09-08 15:18:34","problem_types":["CWE-522","CWE-522 CWE-522: Insufficiently Protected Credentials"],"metrics":{"cvssMetricV40":[{"source":"security@zabbix.com","type":"Secondary","cvssData":{"version":"4.0","vectorString":"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/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","baseScore":2.1,"baseSeverity":"LOW","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"PRESENT","privilegesRequired":"HIGH","userInteraction":"NONE","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","exploitMaturity":"NOT_DEFINED","confidentialityRequirement":"NOT_DEFINED","integrityRequirement":"NOT_DEFINED","availabilityRequirement":"NOT_DEFINED","modifiedAttackVector":"NOT_DEFINED","modifiedAttackComplexity":"NOT_DEFINED","modifiedAttackRequirements":"NOT_DEFINED","modifiedPrivilegesRequired":"NOT_DEFINED","modifiedUserInteraction":"NOT_DEFINED","modifiedVulnConfidentialityImpact":"NOT_DEFINED","modifiedVulnIntegrityImpact":"NOT_DEFINED","modifiedVulnAvailabilityImpact":"NOT_DEFINED","modifiedSubConfidentialityImpact":"NOT_DEFINED","modifiedSubIntegrityImpact":"NOT_DEFINED","modifiedSubAvailabilityImpact":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED"}}],"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N","baseScore":4.9,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"HIGH","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"NONE","availabilityImpact":"NONE"},"exploitabilityScore":1.2,"impactScore":3.6}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-08-18T16:02:07.284994Z","id":"CVE-2026-23922","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:zabbix:zabbix:*:*:*:*:*:*:*:*","versionStartIncluding":"7.4.0","versionEndExcluding":"7.4.9","matchCriteriaId":"3668B6DB-3C57-4C5B-936F-BA6F3DF59F32"}]}]}]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"23922","Ordinal":"1","Title":"Email media OAuth secret leak to Super Admin","CVE":"CVE-2026-23922","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"23922","Ordinal":"1","NoteData":"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.","Type":"Description","Title":"Email media OAuth secret leak to Super Admin"}]}}}