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vuln-cve/data/2026/23xxx/CVE-2026-23923.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-23923",
"assignerOrgId": "72de3e22-0555-4a0d-ae81-9249e0f0a1e8",
"state": "PUBLISHED",
"assignerShortName": "Zabbix",
"dateReserved": "2026-01-19T14:02:54.327Z",
"datePublished": "2026-03-24T18:29:23.165Z",
"dateUpdated": "2026-03-25T19:25:01.128Z"
},
"containers": {
"cna": {
"providerMetadata": {
"orgId": "72de3e22-0555-4a0d-ae81-9249e0f0a1e8",
"shortName": "Zabbix",
"dateUpdated": "2026-03-24T18:29:23.165Z"
},
"title": "Unauthenticated arbitrary PHP class instantiation",
"problemTypes": [
{
"descriptions": [
{
"lang": "en",
"cweId": "CWE-470",
"description": "CWE-470: Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection')",
"type": "CWE"
}
]
}
],
"impacts": [
{
"capecId": "CAPEC-138",
"descriptions": [
{
"lang": "en",
"value": "CAPEC-138: Reflection Injection"
}
]
}
],
"affected": [
{
"vendor": "Zabbix",
"product": "Zabbix",
"repo": "https://git.zabbix.com/",
"modules": [
"Frontend"
],
"versions": [
{
"status": "affected",
"version": "7.4.0",
"lessThanOrEqual": "7.4.6",
"changes": [
{
"at": "7.4.7",
"status": "unaffected"
}
],
"versionType": "git"
}
],
"defaultStatus": "unknown"
}
],
"descriptions": [
{
"lang": "en",
"value": "An unauthenticated attacker can exploit the Frontend 'validate' action to blindly instantiate arbitrary PHP classes. The impact depends on environment setup but appears limited at this time.",
"supportingMedia": [
{
"type": "text/html",
"base64": false,
"value": "<p>An unauthenticated attacker can exploit the Frontend 'validate' action to blindly instantiate arbitrary PHP classes. The impact depends on environment setup but appears limited at this time.</p>"
}
]
}
],
"references": [
{
"url": "https://support.zabbix.com/browse/ZBX-27641"
}
],
"metrics": [
{
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
],
"cvssV4_0": {
"attackVector": "NETWORK",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"privilegesRequired": "NONE",
"userInteraction": "NONE",
"vulnConfidentialityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "NONE",
"subIntegrityImpact": "NONE",
"vulnAvailabilityImpact": "LOW",
"subAvailabilityImpact": "NONE",
"exploitMaturity": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"valueDensity": "NOT_DEFINED",
"vulnerabilityResponseEffort": "NOT_DEFINED",
"providerUrgency": "NOT_DEFINED",
"version": "4.0",
"baseSeverity": "MEDIUM",
"baseScore": 6.9,
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N"
}
}
],
"configurations": [
{
"lang": "en",
"value": "The action can be invoked by any user able to reach Frontend.",
"supportingMedia": [
{
"type": "text/html",
"base64": false,
"value": "<p>The action can be invoked by any user able to reach Frontend.</p>"
}
]
}
],
"solutions": [
{
"lang": "en",
"value": "Update the affected components to their respective fixed versions.",
"supportingMedia": [
{
"type": "text/html",
"base64": false,
"value": "<p>Update the affected components to their respective fixed versions.</p>"
}
]
}
],
"credits": [
{
"lang": "en",
"value": "Zabbix wants to thank pitticus for submitting this report on the HackerOne bug bounty platform.",
"type": "reporter"
}
],
"source": {
"discovery": "EXTERNAL"
},
"x_generator": {
"engine": "Vulnogram 1.0.1"
}
},
"adp": [
{
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2026-03-25T19:24:53.942052Z",
"id": "CVE-2026-23923",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
}
],
"title": "CISA ADP Vulnrichment",
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2026-03-25T19:25:01.128Z"
}
}
]
}
}