CVE-2026-2587
CRITICALEclipse Glassfish - Improper Neutralization of Special Elements used in an Expression Language Statement ('Expression Language Injection')
Title source: ruleExploitation Summary
EIP tracks 1 public exploit for CVE-2026-2587. PoCs published by Bhanunamikaze.
AI-analyzed exploit summary This repository contains a functional exploit PoC for CVE-2026-2587, an EL injection vulnerability in Eclipse GlassFish. The exploit demonstrates remote code execution by leveraging unsanitized EL expressions in the GlassFish admin console gadget handler.
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.
Exploits (1)
This repository contains a functional exploit PoC for CVE-2026-2587, an EL injection vulnerability in Eclipse GlassFish. The exploit demonstrates remote code execution by leveraging unsanitized EL expressions in the GlassFish admin console gadget handler.
References (1)
Scores
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H