## 9.1.0

### New Features

* Data flow barriers and barrier guards can now be added using data extensions. For more information see [Customizing library models for Java and Kotlin](https://codeql.github.com/docs/codeql-language-guides/customizing-library-models-for-java-and-kotlin/).

### Minor Analysis Improvements

* Added `sql-injection` sink models for the Hibernate `org.hibernate.query.QueryProducer` methods `createNativeMutationQuery`, `createMutationQuery`, and `createSelectionQuery`.
* The `java/partial-path-traversal` and `java/partial-path-traversal-from-remote` queries now correctly recognize file separator appends using `+=`.
* The `java/path-injection` and `java/zipslip` queries now recognize `Path.toRealPath()` as a path normalization sanitizer, consistent with the existing treatment of `Path.normalize()` and `File.getCanonicalPath()`. This reduces false positives for code that uses the NIO.2 API for path canonicalization.
* The `java/sensitive-log` query now excludes additional common variable naming patterns that do not hold sensitive data, reducing false positives. This includes pagination/iteration tokens (`nextToken`, `pageToken`, `continuationToken`), token metadata (`tokenType`, `tokenEndpoint`, `tokenCount`), and secret metadata (`secretName`, `secretId`, `secretVersion`).
* The `java/sensitive-log` query now treats method calls whose names contain "encrypt", "hash", or "digest" as sanitizers, consistent with the existing treatment in `java/cleartext-storage-in-log`. This reduces false positives when sensitive data is hashed or encrypted before logging.
* The `java/trust-boundary-violation` query now recognizes regular expression checks (including `String.matches()` guards and `@javax.validation.constraints.Pattern` annotations) as sanitizers, consistent with the existing treatment of ESAPI validators. This reduces false positives when input is validated against a pattern before being stored in a session.