# Apache Camel — 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:** `core/camel-base-engine/`, `core/camel-core-engine/`, `core/camel-core-reifier/`

## Methods Checked

| Method | Location | Guard | Result |
|--------|----------|-------|--------|
| Route startup ordering | `InternalRouteStartupManager.java` | camel-0001 already patched; ordering uses sorted startup numbers, not recursive graph traversal | CLEAN |
| Route `dependsOn` resolution | `AbstractCamelContext.java` | Uses lifecycle strategy list, not recursive dependency graph | CLEAN |
| Bean wiring / `CamelPostProcessorHelper` | `camel-base-engine` | No recursive graph traversal found | CLEAN |

## Conclusion

Apache Camel's route startup ordering is managed by startup order numbers (camel-0001
addressed a quadratic list scan in that ordering). The route dependency (`dependsOn`) field
in XML DSL is resolved via a topological ordering approach, not recursive traversal without
a visited set. No diamond-recursion pattern was found beyond camel-0001.
