CVE-2026-2587: Admingui Remote Code Execution Vulnerability
CRITICALCVE-2026-2587 is a CRITICAL (CVSS 9.6) remote code execution vulnerability (CWE-917: Improper Neutralization of Special Elements used in an Expression Language Statement ('Expression Language Injection')) affecting Admingui libraries in the Maven ecosystem. The issue involves glassfish's gadget handler is vulnerable to rce. Remediation is available by upgrading affected packages to version 8.0.2, 4.2.0.
CVE-2026-2587 at a Glance
Security Impact
CVSS: 9.6
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:R/S:C/C:H/I:H/A:H).
How to Fix CVE-2026-2587
To remediate this vulnerability, upgrade all affected Admingui dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.
<dependency>
<groupId>org.glassfish.main.admingui</groupId>
<artifactId>admingui</artifactId>
<version>8.0.2</version>
</dependency><dependency>
<groupId>org.glassfish.jsftemplating</groupId>
<artifactId>jsftemplating</artifactId>
<version>4.2.0</version>
</dependency>Run the following command in your project directory to verify that all resolved dependencies use the patched release:
mvn dependency:tree -Dincludes=org.glassfish.main.adminguiHow to Check if You Are Affected
To determine whether your Java application is affected by CVE-2026-2587, inspect your build dependencies using the Maven Dependency Plugin:
mvn dependency:tree -Dincludes=org.glassfish.main.adminguiAnalyze the terminal output to locate any version of Admingui in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 8.0.2), your application is affected.
Note: The mvn dependency:tree -Dincludes=org.glassfish.main.admingui 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-917: Improper Neutralization of Special Elements used in an Expression Language Statement ('Expression Language Injection'), where the product constructs all or part of an expression language (el) statement in a framework such as a java server page (jsp) using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended el statement before it is executed. In Admingui, 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
CVE-2026-2587 Affected Admingui Versions
2 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
org.glassfish.main.admingui:admingui
|
Maven |
< 8.0.2
|
8.0.2
|
|
org.glassfish.jsftemplating:jsftemplating
|
Maven |
< 4.2.0
|
4.2.0
|
References
Frequently Asked Questions
What is CVE-2026-2587?
Which Admingui versions are affected?
What version fixes CVE-2026-2587?
Is admingui affected?
Is jsftemplating affected?
What is the CVSS score of CVE-2026-2587?
What CWE is associated with CVE-2026-2587?
How can I check Maven dependencies for CVE-2026-2587?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-29wv-cv7p-xjc2",
"modified" : "2026-06-04T19:21:21Z",
"published" : "2026-05-19T15:31:35Z",
"aliases" : [ "CVE-2026-2587" ],
"summary" : "GlassFish's gadget handler is vulnerable to RCE",
"details" : "A critical Remote Code Execution (RCE) vulnerability was identified in the server-side template rendering mechanism used by the Glassfish gadget handler. The application processes .xml files and evaluates user-supplied values within a context where Expression Language (EL) “expressions” are processed without proper sanitization or escaping. By injecting expressions such as #{7*7}, the server returns 49, confirming server-side EL evaluation. This issue allows a remote attacker to fully compromise the underlying host, enabling capabilities as reading/modifying data, executing arbitrary commands, persistence, and lateral movement.",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "Maven",
"name" : "org.glassfish.main.admingui:admingui"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "0"
}, {
"fixed" : "8.0.2"
} ]
} ]
}, {
"package" : {
"ecosystem" : "Maven",
"name" : "org.glassfish.jsftemplating:jsftemplating"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "0"
}, {
"fixed" : "4.2.0"
} ]
} ]
} ],
"references" : [ {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-2587"
}, {
"type" : "PACKAGE",
"url" : "https://github.com/eclipse-ee4j/glassfish"
}, {
"type" : "WEB",
"url" : "https://github.com/eclipse-ee4j/glassfish/releases/tag/8.0.2"
}, {
"type" : "WEB",
"url" : "https://gitlab.eclipse.org/security/cve-assignment/-/issues/86"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-917" ],
"severity" : "CRITICAL",
"github_reviewed" : true,
"github_reviewed_at" : "2026-06-04T19:21:21Z",
"nvd_published_at" : "2026-05-19T15:16:28Z"
}
}