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CVE-2025-23211 is a server-side template injection vulnerability in Tandoor Recipes caused by unsafe Jinja2 template rendering. The provided context indicates that attacker-controlled recipe content, specifically recipe step instructions, is rendered through Jinja2 in a way that evaluates template expressions instead of treating them as inert data. A demonstrated payload such as {{(1337*31337)|int}} is evaluated and reflected in rendered output as 41897569, confirming SSTI. The referenced code location is cookbook/helper/template_helper.py, and the issue affects Tandoor Recipes versions prior to 1.5.24, including 1.5.23. The context further states that this SSTI can be escalated from expression evaluation to arbitrary command execution on the server.
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