On Mon, 20 Oct 2025 12:12:56 GMT, Oumaiyma Intissar <[email protected]> wrote:

> Constructing URLPermission with an empty/missing host in the authority (e.g., 
> `"http:///path"`) could throw `StringIndexOutOfBoundsException`.
> 
> **Problem**
> Empty or malformed authorities reach HostPortrange, which does `charAt(0)` 
> without checking, causing `StringIndexOutOfBoundsException`.
> 
> **Fix**
> - `URLPermission.Authority`: after stripping userinfo, fail fast if host part 
> is empty.
> - `HostPortrange`: add guards for null/empty input and leading ':' (port 
> without host).
> - No `HttpURLConnection` changes needed in JDK 26 (the `SecurityManager` 
> permission path is gone).
> 
> **Compatibility**
> Only affects malformed inputs: previously `StringIndexOutOfBoundsException`, 
> now `IllegalArgumentException`. Valid inputs unaffected.
> 
> **Testing**
> New jtreg test: `test/jdk/java/net/URLPermission/EmptyAuthorityTest.java` 
> verifies `IllegalArgumentException` for malformed authorities and success for 
> valid ones.

test/jdk/java/net/URLPermission/EmptyAuthorityTest.java line 69:

> 67:         new URLPermission(url); // should not throw
> 68:     }
> 69: }

Please add a new line at the end of the file.

-------------

PR Review Comment: https://git.openjdk.org/jdk/pull/27896#discussion_r2491130629

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