CVE-2026-2587 (GCVE-0-2026-2587)

Vulnerability from cvelistv5 – Published: 2026-05-19 14:03 – Updated: 2026-06-29 08:41
VLAI
Summary
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.
Severity
9.6 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-917 - Improper neutralization of special elements used in an expression language statement ('expression language injection')
Assigner
References
Impacted products
Vendor Product Version
Eclipse Foundation Eclipse Glassfish Unknown: 5.1.0 , ≤ 6.2.5 (semver)
Affected: 7.0.0 , < 7.0.26 (semver)
Affected: 7.1.0 , < 7.1.1 (semver)
Affected: 8.0.0 , < 8.0.2 (semver)
Create a notification for this product.
Credits
Camilo G. AkA Dedalo (DeepSecurity Perú)
Show details on NVD website
To clipboard 

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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.