漏洞描述
The Planyo Online Reservation System plugin for WordPress through 3.0 ships ulap.php, an AJAX proxy that is directly reachable without WordPress bootstrapping or authentication. The send_http_post() function validates the host of the supplied URL against an allowlist that includes localhost, but never validates the URL scheme, so a file://localhost/ URL passes the host check and is handed to curl_init() or fopen(). Both support the file:// wrapper, so the contents of arbitrary local files are returned in the response.
影响产品
暂无结构化产品信息。
修复建议
建议关注厂商安全公告，及时升级至已修复版本，并结合实际资产暴露情况采取缓解措施。
参考链接
www.wordfence.comhttps://www.wordfence.com/threat-intel/vulnerabilities/id/5038d12a-e119-4ab7-aadc-69b765ae7027?source=cve↗plugins.trac.wordpress.orghttps://plugins.trac.wordpress.org/browser/planyo-online-reservation-system/trunk/ulap.php#L59↗nvd.nist.govhttps://nvd.nist.gov/vuln/detail/CVE-2026-3576↗