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CVE-2026-2587

Quick assessment

Affected
Eclipse Foundation Eclipse Glassfish
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Eclipse Glassfish是Eclipse基金会的一个应用服务器。 Eclipse Glassfish存在安全漏洞，该漏洞源于服务器端模板渲染机制中表达式语言表达式处理不当，允许远程攻击者通过注入表达式完全破坏底层主机，实现读取或修改数据、执行任意命令、持久化和横向移动。

CVSS 9.6 · Critical EPSS 0.67% · P50

Affected Version Matrix 4

VendorProduct Version RangeStatus
Eclipse Foundation Eclipse Glassfish 5.1.0≤ 6.2.5 unknown
7.0.0< 7.0.26 affected
7.1.0< 7.1.1 affected
8.0.0< 8.0.2 affected
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I. Basic Information for CVE-2026-2587

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
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. This issue affects Eclipse GlassFish: from 8.0.0 to 8.0.1, fixed in 8.0.2; 7.1.0, fixed in 7.1.1; from 7.0.0 to 7.0.25, fixed in 7.0.26. Impact on versions from 5.1.0 to 6.2.5 is unknown.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
表达式语言语句中使用的特殊元素转义处理不恰当(表达式语言注入)
Source: CVE Program / CVE List V5
Vulnerability Title
Eclipse Glassfish 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Eclipse Glassfish是Eclipse基金会的一个应用服务器。 Eclipse Glassfish存在安全漏洞，该漏洞源于服务器端模板渲染机制中表达式语言表达式处理不当，允许远程攻击者通过注入表达式完全破坏底层主机，实现读取或修改数据、执行任意命令、持久化和横向移动。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Eclipse Foundation Eclipse Glassfish 7.0.0 ~ 7.0.26 -

II. Public POCs for CVE-2026-2587

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III. Intelligence Information for CVE-2026-2587

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Vendor Advisories for CVE-2026-2587 (1)

IV. Related Vulnerabilities

Same product: Eclipse Glassfish
Same vendor: Eclipse Foundation
Same weakness: CWE-917

V. Comments for CVE-2026-2587

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