CVE-2026-55240

{
  "etk_id": "ETK-2026-1707",
  "cve_id": "CVE-2026-55240",
  "display_id": "CVE-2026-55240",
  "ghsa_id": "GHSA-5grg-j3cr-3hpm",
  "euvd_id": "EUVD-2026-102246",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Server-side template injection in Tianji",
  "summary": "Tianji versions earlier than 1.31.29 can evaluate unsafe template content in survey feeds and monitor notifications. An attacker can trigger server-side code execution through a public survey submission when a workspace administrator has stored a template containing an evaluation block.",
  "mitigation": "Upgrade Tianji to version 1.31.29 or later. Until upgraded, remove evaluation-style code blocks from survey and notification templates and restrict who can modify them.",
  "vendor": "msgbyte",
  "product": "tianji",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        "<= 1.31.28"
      ],
      "ecosystem": "npm",
      "fixed_versions": [
        "1.31.29"
      ],
      "package_name": "tianji",
      "purl": "pkg:npm/tianji"
    }
  ],
  "cwes": [
    1336
  ],
  "cvss_score": 9.1,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H",
  "epss_score": 0.0058,
  "epss_percentile": 0.4649,
  "epss_asof": "2026-10-20",
  "automation": "contextual",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 22.086303966666666,
  "t0_at": "2026-10-15T18:15:12.957000+00:00",
  "signals": {
    "trigger_signal": {
      "at": "2026-10-15T18:15:12.957000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-15T18:15:12.957000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-55240"
    }
  }
}