- Analyzer
- semgrep
- Category
- Injection
- Default severity
- HIGH
- CWE
- CWE-94
- Execution
- Passive
- Authentication
- Not required
- Applicability
- python
- Availability
- stable
What it detects
Server-side template injection via render_template_string(): an injection check run by the semgrep analyzer.
Evidence
The Semgrep source location, rule identity, and bounded match context normalized into Fendix evidence.
Remediation
render_template_string() called with a non-literal template — server-side template injection (SSTI) risk. Use render_template() with a static .html file; never compose Jinja source from user input.
Limitations
This check is limited to the applicability and evidence delivered by semgrep. Review the evidence in context; a match is a finding input, while confidence and policy determine its disposition.
Related reference
Analyzer Registry · Findings and release decisions · Policy and confidence
Remediation guidance: Remediation and fix verification · Baselines and suppressions