CVE-2026-55240

CVE-2026-55240 · Tianji: Remote Code Execution via lodash template evaluate pattern in survey feed templates

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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.

CVSS 9.1 · Критический · EPSS 0,6%

Опубликовано

2026-10-15T18:15:12.957Z

Обновлено

2026-10-15T18:15:12.957Z

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