Sahil-Jaiswal-189 opened a new issue, #13638:
URL: https://github.com/apache/maven/issues/13638
### Affected version
4.1.0-SNAPSHOT
### Bug description
## Description
The interpolator can get stuck when a property refers to itself.
For example:
```properties
outer=${a}
a=${a}
```
When resolving `outer`, it looks up `a`. But the value of `a` is `${a}`, so
it looks up `a` again. This repeats until Java throws `StackOverflowError`.
It should detect the circular reference and report a clear error instead.
This bug existed before the utility extraction in #13379 and is being
reported separately, as requested during review.
## Affected version
`4.1.0-SNAPSHOT` (`master`).
The earliest affected released version has not been determined.
## Reproducer
```java
DefaultInterpolator.substVars(
"${a}", "outer", null,
Map.of("a", "${a}"), null, null, false);
```
## Expected result
An `InterpolatorException` explaining the problem:
```text
recursive variable reference: a
```
## Actual result
```text
java.lang.StackOverflowError
```
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