# Vert.x — Diamond Recursion (CWE-407 O(2^D)) Scan: CLEAN

**Pattern:** Recursive cycle-detection / dependency traversal without a visited set
(exponential re-visitation on diamond-shaped DAGs)
**Scan date:** 2026-03-29
**Scope:** `vertx-core/src/main/java/io/vertx/`

## Methods Checked

| Method | Location | Guard | Result |
|--------|----------|-------|--------|
| Module/verticle dependency ordering | `vertx-core/src/main/java/` | No recursive dependency graph traversal found | CLEAN |
| HA manager (beyond vertx-0001) | `HAManager.java` | vertx-0001 already patched list-scan; no recursive graph traversal | CLEAN |

## Conclusion

Vert.x does not implement a plugin/module dependency graph with recursive traversal.
No diamond-recursion pattern was found beyond the previously identified vertx-0001.