CVE-2026-2587

The record

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.

Affected packages

Related vulnerabilities

• CVE-2026-65591 n8n contains a sanitizer bypass vulnerability in the legacy expression evaluator's… CWE-917
• CVE-2026-57281 Jenkins Script Security Plugin 1402.v94c9ce464861 and earlier does not reject Groovy AST… CWE-917
• CVE-2026-11561 Improper neutralization of special elements used in an expression language statement… CWE-917
• CVE-2026-40985 Applications that configure the WebFlowELExpressionParser are vulnerable to the use of… CWE-917
• CVE-2026-41729 Spring Data REST is vulnerable to SpEL expression injection through map-typed properties… CWE-917
• CVE-2026-41719 A SpEL Injection vulnerability exists in the Spring Data KeyValue if unsanitized user… CWE-917
• CVE-2026-41717 Spring Data MongoDB contains a SpEL (Spring Expression Language) expression injection… CWE-917
• CVE-2026-8888 Version 3.0.7 of the Securly Chrome Extension downloads config.json over HTTP and… CWE-917