{"schema_version": "1.6.1", "id": "CVE-2026-58301", "summary": "Server-side POST request may be steered to an alternate host", "details": "When Apache Shiro is used with the Jakarta EE integration module, a low-privileged user can craft an HTTP request that causes the server to initiate a connection to an attacker-controlled URL and transmit attacker-controlled data. This vulnerability affects Apache Shiro versions 2.x through 3.0.0 only in deployments that use the Jakarta EE integration module.\n\nMitigation: Upgrade to version 3.0.1 or later, which fixes the issue. +\nAlternatively, you can set the `org.apache.shiro.form-resubmit-host` (String) and `org.apache.shiro.form-resubmit-port` (Integer) system properties to restrict the host and port that Shiro will connect to when resubmitting a form.", "affected": [{"ranges": [{"type": "SEMVER", "events": [{"introduced": "2.0.0-alpha-0"}, {"last_affected": "2.0.0-alpha-0"}]}]}], "references": [{"type": "WEB", "url": "https://lists.apache.org/thread/g1g84ovof5fnonvc5o89wym2jzt77fww"}]}