elharo opened a new issue, #12598:
URL: https://github.com/apache/maven/issues/12598
# DefaultModelBuilder: getEnhancedProperties StackOverflow recursion
**Found in:** maven-4.0.x branch
**File:**
`impl/maven-impl/src/main/java/org/apache/maven/impl/model/DefaultModelBuilder.java`
(lines 728-748)
**Severity:** Medium
## Description
`getEnhancedProperties` calls
`derive(Sources.buildSource(rootModelPath)).readFileModel(activeModelReads)`
recursively. The `activeModelReads` guard only checks normalized path, but if
the root model's project directory and `rootDirectory` differ in a way that
causes `locateExistingPom` to return a path whose normalized form is NOT in
`activeModelReads` but still eventually leads back to the same model, a
StackOverflowError can occur.
The comment at lines 736-737 explicitly acknowledges this: "to prevent
StackOverflowError when a project has an internal parent in a subdirectory with
CI-friendly ${revision} and a .mvn/ root marker (GH-12301)".
This can crash Maven entirely in complex multi-module projects with `.mvn/`
root markers and CI-friendly versions.
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