CVE-2026-3576
The Planyo Online Reservation System plugin for WordPress is vulnerable to Server-Side Request Forgery leading to Local File Inclusion in all versions up to, and including, 3.0.
Does this matter?
A public exploit is published in Exploit-DB and the impact is high, while EPSS rates exploitation at 8.8%. Anyone can run this; patch or mitigate before the next change window and check exposed instances for signs of use.
Description
The Planyo Online Reservation System plugin for WordPress is vulnerable to Server-Side Request Forgery leading to Local File Inclusion in all versions up to, and including, 3.0. The ulap.php file acts as an AJAX proxy and is directly accessible without WordPress bootstrapping or any authentication. The send_http_post() function validates the host of the provided URL against an allowlist that includes 'localhost', but critically fails to validate the URL scheme/protocol. This makes it possible for unauthenticated attackers to supply a file:// URL (e.g., file://localhost/etc/passwd) which bypasses the host allowlist check because parse_url() returns 'localhost' as the host. The URL is then passed to curl_init() or fopen(), both of which support the file:// protocol, allowing the attacker to read arbitrary local files on the server and have their contents returned in the HTTP response. This can lead to disclosure of sensitive files such as /etc/passwd, wp-config.php (containing database credentials and authentication keys), and other server-side files.
- CVSS 3.1
- 7.2 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
- EPSS
- 8.81% probability · 95th percentile
- Public exploits
- 1 in Exploit-DB · first 11 August 2026
- CISA KEV
- Not listed
- Weakness
- CWE-20
- Source
- security@wordfence.com
EPSS moved from 8.8% on 24 September 2026 to 8.8% on 26 October 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.
Public exploits (1)
Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.
References
- https://plugins.trac.wordpress.org/browser/planyo-online-reservation-system/tags/2.7/ulap.php#L118
- https://plugins.trac.wordpress.org/browser/planyo-online-reservation-system/tags/2.7/ulap.php#L120
- https://plugins.trac.wordpress.org/browser/planyo-online-reservation-system/tags/2.7/ulap.php#L59
- https://plugins.trac.wordpress.org/browser/planyo-online-reservation-system/tags/2.7/ulap.php#L84
- https://plugins.trac.wordpress.org/browser/planyo-online-reservation-system/tags/2.7/ulap.php#L96
- https://plugins.trac.wordpress.org/browser/planyo-online-reservation-system/trunk/ulap.php#L118
- https://plugins.trac.wordpress.org/browser/planyo-online-reservation-system/trunk/ulap.php#L120
- https://plugins.trac.wordpress.org/browser/planyo-online-reservation-system/trunk/ulap.php#L59
- https://plugins.trac.wordpress.org/browser/planyo-online-reservation-system/trunk/ulap.php#L84
- https://plugins.trac.wordpress.org/browser/planyo-online-reservation-system/trunk/ulap.php#L96
- https://plugins.trac.wordpress.org/changeset?reponame=&old=3488647%40planyo-online-reservation-system&new=3488647%40planyo-online-reservation-system
- https://www.wordfence.com/threat-intel/vulnerabilities/id/5038d12a-e119-4ab7-aadc-69b765ae7027?source=cve
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.