Planyo online reservation system <= 3.0 - Unauthenticated Server-Side Request Forgery via 'ulap_url' Parameter

MITRE NVD CVE.ORG JSON API Print: PDF PDF

Summary

CVECVE-2026-3576
StatePUBLISHED
AssignerWordfence
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-11 05:16:34 UTC
Updated2026-07-11 05:16:34 UTC
DescriptionThe 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.

Risk And Classification

Primary CVSS: v3.1 7.2 HIGH from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

Problem Types: CWE-20 | CWE-20 CWE-20 Improper Input Validation

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary7.2HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
3.1CNADECLARED7.2HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Xtreeme Planyo Online Reservation System affected 3.0 semver Not specified

References

ReferenceSourceLinkTags
plugins.trac.wordpress.org/browser/planyo-online-reservation-system/tags/2.7/ulap.php [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/planyo-online-reservation-system/tags/2.7/ulap.php [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/planyo-online-reservation-system/trunk/ulap.php [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/planyo-online-reservation-system/trunk/ulap.php [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/planyo-online-reservation-system/tags/2.7/ulap.php [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/planyo-online-reservation-system/trunk/ulap.php [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/planyo-online-reservation-system/trunk/ulap.php [email protected] plugins.trac.wordpress.org
www.wordfence.com/threat-intel/vulnerabilities/id/5038d12a-e119-4ab7-aadc-69b76... [email protected] www.wordfence.com
plugins.trac.wordpress.org/changeset [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/planyo-online-reservation-system/tags/2.7/ulap.php [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/planyo-online-reservation-system/trunk/ulap.php [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/planyo-online-reservation-system/tags/2.7/ulap.php [email protected] plugins.trac.wordpress.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: chaeyp (en)

CNA: Ronnachai Sretawat Na Ayutaya (Simonhaskelly) (en)

CNA: Ronnachai Chaipha (rxnr) (en)

Additional Advisory Data

SourceTimeEvent
CNA2026-07-10T14:43:19.000ZDisclosed
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