| 1 | rules: |
| 2 | |
| 3 | - id: cyc-py-jinja-from-string |
| 4 | languages: [python] |
| 5 | severity: ERROR |
| 6 | message: > |
| 7 | render_template_string / Environment.from_string / Template(...) builds a template from a |
| 8 | string; if that string is attacker-controlled it is SSTI -> RCE. IMPACT GATE: Family 1. |
| 9 | metadata: |
| 10 | cwe: ["CWE-1336: Server-Side Template Injection", "CWE-94: Code Injection"] |
| 11 | confidence: HIGH |
| 12 | archetype: [ai-agent-mcp, devops-infra] |
| 13 | impact: rce |
| 14 | patterns: |
| 15 | - pattern-either: |
| 16 | - pattern: render_template_string(...) |
| 17 | - pattern: flask.render_template_string(...) |
| 18 | - pattern: $ENV.from_string(...) |
| 19 | - pattern: jinja2.Template(...) |
| 20 | - pattern: Template(...).render(...) |
| 21 | |
| 22 | - id: cyc-py-mako-tornado |
| 23 | languages: [python] |
| 24 | severity: ERROR |
| 25 | message: > |
| 26 | Mako / Tornado Template built from a tainted string is SSTI -> RCE (Mako allows arbitrary |
| 27 | Python in `<% %>`). IMPACT GATE: Family 1. |
| 28 | metadata: |
| 29 | cwe: ["CWE-1336: Server-Side Template Injection"] |
| 30 | confidence: MEDIUM |
| 31 | archetype: [devops-infra] |
| 32 | impact: rce |
| 33 | patterns: |
| 34 | - pattern-either: |
| 35 | - pattern: mako.template.Template(...) |
| 36 | - pattern: tornado.template.Template(...) |
| 37 | |
| 38 | - id: cyc-js-template-compile |
| 39 | languages: [javascript, typescript] |
| 40 | severity: ERROR |
| 41 | message: > |
| 42 | Handlebars.compile / ejs.render / pug.compile / lodash _.template / nunjucks.renderString on a |
| 43 | tainted template string is SSTI -> RCE in Node. IMPACT GATE: Family 1. |
| 44 | metadata: |
| 45 | cwe: ["CWE-1336: Server-Side Template Injection"] |
| 46 | confidence: HIGH |
| 47 | archetype: [ai-agent-mcp, devops-infra, electron-desktop] |
| 48 | impact: rce |
| 49 | patterns: |
| 50 | - pattern-either: |
| 51 | - pattern: Handlebars.compile(...) |
| 52 | - pattern: Handlebars.precompile(...) |
| 53 | - pattern: ejs.render($T, ...) |
| 54 | - pattern: ejs.compile($T, ...) |
| 55 | - pattern: pug.compile($T, ...) |
| 56 | - pattern: pug.render($T, ...) |
| 57 | - pattern: jade.compile($T, ...) |
| 58 | - pattern: _.template($T, ...) |
| 59 | - pattern: nunjucks.renderString($T, ...) |
| 60 | |
| 61 | - id: cyc-java-template-injection |
| 62 | languages: [java] |
| 63 | severity: ERROR |
| 64 | message: > |
| 65 | Freemarker Template / Velocity.evaluate / Thymeleaf processed from a tainted string is SSTI -> |
| 66 | RCE. IMPACT GATE: Family 1. |
| 67 | metadata: |
| 68 | cwe: ["CWE-1336: Server-Side Template Injection"] |
| 69 | confidence: MEDIUM |
| 70 | archetype: [devops-infra] |
| 71 | impact: rce |
| 72 | patterns: |
| 73 | - pattern-either: |
| 74 | - pattern: new Template($N, $R, ...) |
| 75 | - pattern: Velocity.evaluate(...) |
| 76 | - pattern: $VE.evaluate(...) |