CVE-2026-80099: Software Security Vulnerability Vulnerability
HIGHCVE-2026-80099 is a HIGH (CVSS 8.8) security vulnerability vulnerability (CWE-287: Improper Authentication) affecting Software libraries in the Maven ecosystem. The weakness occurs when when an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.. Remediation is available in the latest vendor maintenance releases.
CVE-2026-80099 at a Glance
Security Impact
CVSS: 8.8
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).
How to Fix CVE-2026-80099
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-2026-80099, 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-287: Improper Authentication, where when an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. 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-2026-80099?
Which Software versions are affected?
What version fixes CVE-2026-80099?
What is the CVSS score of CVE-2026-80099?
What CWE is associated with CVE-2026-80099?
How can I check Maven dependencies for CVE-2026-80099?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-x9jw-34gv-v4x8",
"modified" : "2026-09-09T09:33:00Z",
"published" : "2026-09-09T09:33:00Z",
"aliases" : [ "CVE-2026-80099" ],
"details" : "Several Newfold plugins are vulnerable to Authentication Bypass. The vulnerability exists because the plugins bundle the wp-module-data module. In the module, the `authenticate()` method — registered on the `rest_authentication_errors` filter and therefore evaluated for every unauthenticated REST API request — performs an HMAC-style Bearer token comparison that degenerates when `HiiveConnection::get_auth_token()` returns `false`: PHP coerces `strrev(false)` to `strrev('')`, collapsing the secret salt to the publicly known constant `hash('sha256', '') = e3b0c44...`, while all remaining hash inputs (HTTP method, request URL, raw request body, and the `X-Timestamp` header) remain fully attacker-controlled. This makes it possible for unauthenticated attackers to compute a valid Bearer token entirely offline, pass the token equality check, and have `wp_set_current_user()` invoked against the first administrator returned by `get_users(['role' => 'administrator'])`, granting full administrator-level access and enabling arbitrary REST API operations such as creating new administrator accounts and achieving complete site takeover. Vulnerable versions are WP Plugin Crazy Domains (<= 2.5.2), WP Plugin Web (<= 2.3.4), WP Plugin Hostgator (<= 3.1.0), WP Plugin Bluehost (<= 4.17.1). The affected module is vulnerable in versions up to, and including, 2.9.4.",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
} ],
"affected" : [ ],
"references" : [ {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-80099"
}, {
"type" : "WEB",
"url" : "https://github.com/newfold-labs/wp-module-data/commit/9d913fd8fa12796c4d9c09081e4aeccfa5cb1301"
}, {
"type" : "WEB",
"url" : "https://github.com/newfold-labs/wp-plugin-bluehost/compare/4.19.0...4.19.1"
}, {
"type" : "WEB",
"url" : "https://github.com/newfold-labs/wp-plugin-crazy-domains/compare/2.5.2...2.5.3"
}, {
"type" : "WEB",
"url" : "https://github.com/newfold-labs/wp-plugin-hostgator/compare/3.2.0...3.2.1"
}, {
"type" : "WEB",
"url" : "https://github.com/newfold-labs/wp-plugin-web/compare/2.3.5...2.3.6"
}, {
"type" : "WEB",
"url" : "https://plugins.trac.wordpress.org/browser/wp-module-data/trunk/includes/Data.php#L191"
}, {
"type" : "WEB",
"url" : "https://plugins.trac.wordpress.org/browser/wp-module-data/trunk/includes/Data.php#L201"
}, {
"type" : "WEB",
"url" : "https://plugins.trac.wordpress.org/browser/wp-module-data/trunk/includes/Data.php#L222"
}, {
"type" : "WEB",
"url" : "https://plugins.trac.wordpress.org/browser/wp-module-data/trunk/includes/Data.php#L69"
}, {
"type" : "WEB",
"url" : "https://plugins.trac.wordpress.org/browser/wp-module-data/trunk/includes/HiiveConnection.php#L406"
}, {
"type" : "WEB",
"url" : "https://www.wordfence.com/threat-intel/vulnerabilities/id/3ee369c0-0d7c-4142-b3ba-a518288647ba?source=cve"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-287" ],
"severity" : "HIGH",
"github_reviewed" : false,
"github_reviewed_at" : null,
"nvd_published_at" : "2026-09-09T09:17:12Z"
}
}