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The Planyo Online Reservation System WordPress plugin (versions up to and including 3.0) contains a Server-Side Request Forgery (SSRF) vulnerability that allows unauthenticated attackers to read arbitrary local files. The vulnerability arises because the plugin's AJAX proxy endpoint does not properly validate URL schemes, permitting file:// URLs to bypass host allowlist checks and access sensitive server files such as /etc/passwd and wp-config.php.

CVE-2026-3576 is an SSRF vulnerability in the Planyo Online Reservation System WordPress plugin affecting all versions up to 3.0. The vulnerability exists in the ulap.php file, which acts as an AJAX proxy accessible without authentication or WordPress bootstrapping. The send_http_post() function attempts to validate the host of the provided URL against an allowlist including 'localhost' but fails to validate the URL scheme. This allows attackers to supply file:// URLs that bypass the host check because parse_url() returns 'localhost' as the host. The URL is then passed to curl_init() or fopen(), which support file://, enabling arbitrary local file read and disclosure of sensitive server files.

Exploit code for Planyo_Online_Reservation_System  3.0 - Arbitrary File Read via SSRF

Detailed information about CVE-2026-3576: CWE-20 Improper Input Validation in xtreeme Planyo online reservation system affecting xtreeme Planyo online reservati

CVE-2026-3576: CWE-20 Improper Input Validation in xtreeme Planyo online reservation system - Live Threat Intelligence - Threat Radar | OffSeq.com

CVE-2026-3576: CWE-20 Improper Input Validation in xtreeme Planyo online reservation system

Threats Tagged 'kali gnu/linux rolling, wordpress 7.0.1, apache 2.4.68, python 3.13.14'

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Threats Tagged 'kali gnu/linux rolling, wordpress 7.0.1, apache 2.4.68, python 3.13.14'

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