CVE-2026-3576: Software Security Vulnerability Vulnerability
HIGHCVE-2026-3576 is a HIGH (CVSS 7.2) security vulnerability vulnerability (CWE-20: Improper Input Validation) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.. Remediation is available in the latest vendor maintenance releases.
CVE-2026-3576 at a Glance
Security Impact
CVSS: 7.2
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N).
How to Fix CVE-2026-3576
To remediate this vulnerability, upgrade all affected Software dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.
Run the following command in your project directory to verify that all resolved dependencies use the patched release:
mvn dependency:treeHow to Check if You Are Affected
To determine whether your Java application is affected by CVE-2026-3576, inspect your build dependencies using the Maven Dependency Plugin:
mvn dependency:treeAnalyze the terminal output to locate any version of Software in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than the patched release), your application is affected.
Note: The mvn dependency:tree command inspects the resolved dependency graph declared in your project's POM files; it does not perform automated security scanning or inspect runtime dynamic classpaths. Always verify runtime container classpaths and shaded JARs.
Technical Details
Vulnerability Mechanism & Technical Analysis
This vulnerability is classified under CWE-20: Improper Input Validation, where the product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. In Software, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.
Source Advisory Statement
References
Frequently Asked Questions
What is CVE-2026-3576?
Which Software versions are affected?
What version fixes CVE-2026-3576?
What is the CVSS score of CVE-2026-3576?
What CWE is associated with CVE-2026-3576?
How can I check Maven dependencies for CVE-2026-3576?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-jjq9-3x6f-75pj",
"modified" : "2026-07-11T06:31:16Z",
"published" : "2026-07-11T06:31:16Z",
"aliases" : [ "CVE-2026-3576" ],
"details" : "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.",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N"
} ],
"affected" : [ ],
"references" : [ {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-3576"
}, {
"type" : "WEB",
"url" : "https://plugins.trac.wordpress.org/browser/planyo-online-reservation-system/tags/2.7/ulap.php#L118"
}, {
"type" : "WEB",
"url" : "https://plugins.trac.wordpress.org/browser/planyo-online-reservation-system/tags/2.7/ulap.php#L120"
}, {
"type" : "WEB",
"url" : "https://plugins.trac.wordpress.org/browser/planyo-online-reservation-system/tags/2.7/ulap.php#L59"
}, {
"type" : "WEB",
"url" : "https://plugins.trac.wordpress.org/browser/planyo-online-reservation-system/tags/2.7/ulap.php#L84"
}, {
"type" : "WEB",
"url" : "https://plugins.trac.wordpress.org/browser/planyo-online-reservation-system/tags/2.7/ulap.php#L96"
}, {
"type" : "WEB",
"url" : "https://plugins.trac.wordpress.org/browser/planyo-online-reservation-system/trunk/ulap.php#L118"
}, {
"type" : "WEB",
"url" : "https://plugins.trac.wordpress.org/browser/planyo-online-reservation-system/trunk/ulap.php#L120"
}, {
"type" : "WEB",
"url" : "https://plugins.trac.wordpress.org/browser/planyo-online-reservation-system/trunk/ulap.php#L59"
}, {
"type" : "WEB",
"url" : "https://plugins.trac.wordpress.org/browser/planyo-online-reservation-system/trunk/ulap.php#L84"
}, {
"type" : "WEB",
"url" : "https://plugins.trac.wordpress.org/browser/planyo-online-reservation-system/trunk/ulap.php#L96"
}, {
"type" : "WEB",
"url" : "https://plugins.trac.wordpress.org/changeset?reponame=&old=3488647%40planyo-online-reservation-system&new=3488647%40planyo-online-reservation-system"
}, {
"type" : "WEB",
"url" : "https://www.wordfence.com/threat-intel/vulnerabilities/id/5038d12a-e119-4ab7-aadc-69b765ae7027?source=cve"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-20" ],
"severity" : "HIGH",
"github_reviewed" : false,
"github_reviewed_at" : null,
"nvd_published_at" : "2026-07-11T05:16:34Z"
}
}