{
    "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": "2026-10-15T18:15:12.957Z"
    },
    "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"
            }
        }
    }
}