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vuln-cve/data/2026/55xxx/CVE-2026-55240.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-55240",
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"state": "PUBLISHED",
"assignerShortName": "GitHub_M",
"dateReserved": "2026-06-16T16:44:00.624Z",
"datePublished": "2026-10-15T18:15:12.957Z",
"dateUpdated": "2026-10-28T20:04:59.360Z"
},
"containers": {
"cna": {
"title": "Tianji: Remote Code Execution via lodash template evaluate pattern in survey feed templates",
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-1336",
"lang": "en",
"description": "CWE-1336: Improper Neutralization of Special Elements Used in a Template Engine",
"type": "CWE"
}
]
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 9.1,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "HIGH",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H",
"version": "3.1"
}
}
],
"references": [
{
"name": "https://github.com/msgbyte/tianji/security/advisories/GHSA-5grg-j3cr-3hpm",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/msgbyte/tianji/security/advisories/GHSA-5grg-j3cr-3hpm"
},
{
"name": "https://github.com/msgbyte/tianji/commit/132ff67907df897d222829ea8ad1a018ff74df48",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/msgbyte/tianji/commit/132ff67907df897d222829ea8ad1a018ff74df48"
},
{
"name": "https://github.com/msgbyte/tianji/releases/tag/v1.31.29",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/msgbyte/tianji/releases/tag/v1.31.29"
}
],
"affected": [
{
"vendor": "msgbyte",
"product": "tianji",
"versions": [
{
"version": "< 1.31.29",
"status": "affected"
}
]
}
],
"providerMetadata": {
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M",
"dateUpdated": "2026-10-15T18:15:12.957Z"
},
"descriptions": [
{
"lang": "en",
"value": "Tianji is an open source analytics, uptime monitoring, and server status platform. Prior to 1.31.29, formatString() in src/server/utils/template.ts passes survey feedTemplate and monitor notification templates to lodash template(), while the default evaluate pattern remains enabled. A workspace administrator can store an evaluate block using the <% code %> form, and the public survey.submit endpoint renders a survey template when an unauthenticated user submits a response. The compiled template executes server-side JavaScript in the Tianji Node.js process, allowing command execution, secret disclosure, data modification, or service disruption. This issue is fixed in version 1.31.29."
}
],
"source": {
"advisory": "GHSA-5grg-j3cr-3hpm",
"discovery": "UNKNOWN"
}
},
"adp": [
{
"references": [
{
"url": "https://github.com/msgbyte/tianji/security/advisories/GHSA-5grg-j3cr-3hpm",
"tags": [
"exploit"
]
}
],
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2026-10-28T20:04:51.050574Z",
"id": "CVE-2026-55240",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
}
],
"title": "CISA ADP Vulnrichment",
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2026-10-28T20:04:59.360Z"
}
}
]
}
}