CVE-2026-2587

CRITICALPre-NVD 9.69.6—
EchelonGraph scoreMEDIUM confidence

Score 9.6 from GitHub Security Advisory (severity: CRITICAL) published 2026-05-19. a secondary CVSS source baseline 9.6; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
9.6
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 9.6Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
9.6
EG Score
9.6(medium)
EPSS
45.8%
KEV
Not listed

Published

May 19, 2026

Last Modified

June 29, 2026

Advisory Details (1)

Auto-updated May 19, 2026
No patch confirmed yet.
generic

Remote Code Execution via EL Injection + CSRF [CVE Reservation for Issue 329] (#86) · Issues · Eclipse Projects Security / cve-assignment · GitLab

https://gitlab.eclipse.org/security/cve-assignment/-/issues/86

Vendor Advisories for CVE-2026-2587(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(2 across 1 ecosystem)
Maven(2)
PackageVulnerable rangeFixed inDependents
org.glassfish.jsftemplating:jsftemplating1.2.0-1 ... 4.1.0-M1 (12 versions)4.2.0—
org.glassfish.main.admingui:admingui3.1.2 ... 8.0.1 (83 versions)8.0.2—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 9× in last 7d / 91× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 221 total refreshes for this CVE.

  1. 2026-07-09 19:10 UTCEPSS rescore
  2. 2026-07-08 15:15 UTCEPSS rescore
  3. 2026-07-07 13:46 UTCEPSS rescore
  4. 2026-07-06 16:27 UTCEPSS rescore
  5. 2026-07-06 16:27 UTCEPSS rescore
  6. 2026-07-06 02:23 UTCEPSS rescore
  7. 2026-07-06 02:23 UTCEPSS rescore
  8. 2026-07-05 02:30 UTCEPSS rescore
  9. 2026-07-04 06:31 UTCEPSS rescore
  10. 2026-07-01 15:06 UTCEPSS rescore
  11. 2026-06-30 23:22 UTCEPSS rescore
  12. 2026-06-29 20:55 UTCEG score recompute
  13. 2026-06-29 14:06 UTCEPSS rescore
  14. 2026-06-29 14:06 UTCEPSS rescore
  15. 2026-06-28 14:07 UTCEPSS rescore
  16. 2026-06-28 14:07 UTCEPSS rescore
  17. 2026-06-28 12:31 UTCEG score recompute
  18. 2026-06-28 08:38 UTCEG score recompute
  19. 2026-06-28 04:56 UTCEPSS rescore
  20. 2026-06-28 04:56 UTCEPSS rescore
  21. 2026-06-28 04:50 UTCEG score recompute
  22. 2026-06-28 00:51 UTCEG score recompute
  23. 2026-06-27 20:26 UTCEG score recompute
  24. 2026-06-27 12:36 UTCEG score recompute
  25. 2026-06-27 07:37 UTCEG score recompute
Show 75 more
  1. 2026-06-27 03:08 UTCEPSS rescore
  2. 2026-06-26 19:49 UTCEG score recompute
  3. 2026-06-26 03:51 UTCEG score recompute
  4. 2026-06-25 20:55 UTCEG score recompute
  5. 2026-06-25 17:06 UTCEG score recompute
  6. 2026-06-25 13:49 UTCEPSS rescore
  7. 2026-06-25 13:49 UTCEPSS rescore
  8. 2026-06-24 14:05 UTCEPSS rescore
  9. 2026-06-23 21:33 UTCEPSS rescore
  10. 2026-06-23 21:33 UTCEPSS rescore
  11. 2026-06-22 14:25 UTCEPSS rescore
  12. 2026-06-22 14:25 UTCEPSS rescore
  13. 2026-06-21 14:56 UTCEPSS rescore
  14. 2026-06-21 14:56 UTCEPSS rescore
  15. 2026-06-21 01:59 UTCEPSS rescore
  16. 2026-06-19 19:25 UTCEPSS rescore
  17. 2026-06-19 19:25 UTCEPSS rescore
  18. 2026-06-18 17:52 UTCEPSS rescore
  19. 2026-06-18 17:52 UTCEPSS rescore
  20. 2026-06-18 03:51 UTCEG score recompute
  21. 2026-06-17 23:57 UTCEG score recompute
  22. 2026-06-17 20:09 UTCEG score recompute
  23. 2026-06-17 17:53 UTCEPSS rescore
  24. 2026-06-17 17:53 UTCEPSS rescore
  25. 2026-06-17 15:35 UTCEG score recompute
  26. 2026-06-17 11:46 UTCEG score recompute
  27. 2026-06-17 05:01 UTCEG score recompute
  28. 2026-06-17 01:00 UTCEG score recompute
  29. 2026-06-16 21:13 UTCEG score recompute
  30. 2026-06-16 17:52 UTCEPSS rescore
  31. 2026-06-16 10:51 UTCEG score recompute
  32. 2026-06-16 06:35 UTCEG score recompute
  33. 2026-06-16 02:49 UTCEG score recompute
  34. 2026-06-15 23:03 UTCEG score recompute
  35. 2026-06-15 17:48 UTCEPSS rescore
  36. 2026-06-15 16:24 UTCEG score recompute
  37. 2026-06-15 05:47 UTCEG score recompute
  38. 2026-06-15 02:02 UTCEG score recompute
  39. 2026-06-14 23:18 UTCEPSS rescore
  40. 2026-06-14 22:15 UTCEG score recompute
  41. 2026-06-14 18:25 UTCEG score recompute
  42. 2026-06-14 14:14 UTCEG score recompute
  43. 2026-06-14 10:03 UTCEG score recompute
  44. 2026-06-14 06:17 UTCEG score recompute
  45. 2026-06-14 02:27 UTCEG score recompute
  46. 2026-06-13 23:00 UTCEPSS rescore
  47. 2026-06-13 22:42 UTCEG score recompute
  48. 2026-06-13 14:35 UTCEG score recompute
  49. 2026-06-13 07:26 UTCEG score recompute
  50. 2026-06-13 03:39 UTCEG score recompute
  51. 2026-06-12 23:32 UTCEG score recompute
  52. 2026-06-12 23:12 UTCEPSS rescore
  53. 2026-06-12 23:12 UTCEPSS rescore
  54. 2026-06-12 19:44 UTCEG score recompute
  55. 2026-06-12 15:58 UTCEG score recompute
  56. 2026-06-12 11:35 UTCEG score recompute
  57. 2026-06-12 07:49 UTCEG score recompute
  58. 2026-06-12 04:04 UTCEG score recompute
  59. 2026-06-12 00:19 UTCEG score recompute
  60. 2026-06-11 20:32 UTCEG score recompute
  61. 2026-06-11 16:47 UTCEG score recompute
  62. 2026-06-11 14:00 UTCEPSS rescore
  63. 2026-06-11 11:38 UTCEG score recompute
  64. 2026-06-11 07:50 UTCEG score recompute
  65. 2026-06-11 04:04 UTCEG score recompute
  66. 2026-06-11 00:16 UTCEG score recompute
  67. 2026-06-10 22:18 UTCEPSS rescore
  68. 2026-06-10 22:18 UTCEPSS rescore
  69. 2026-06-10 20:30 UTCEG score recompute
  70. 2026-06-10 16:44 UTCEG score recompute
  71. 2026-06-10 13:22 UTCEPSS rescore
  72. 2026-06-10 12:59 UTCEG score recompute
  73. 2026-06-10 09:13 UTCEG score recompute
  74. 2026-06-10 05:28 UTCEG score recompute
  75. 2026-06-10 01:42 UTCEG score recompute

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-2587?
CVE-2026-2587 is a critical vulnerability published on May 19, 2026. 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…
When was CVE-2026-2587 disclosed?
CVE-2026-2587 was first published in the National Vulnerability Database on May 19, 2026, with the most recent update on June 29, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-2587 actively exploited?
CVE-2026-2587 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 45.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-2587?
CVE-2026-2587 has a CVSS v3 base score of 9.6 (NVD).
How do I remediate CVE-2026-2587?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-2587, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-2587

Explore →

Is Your Infrastructure Affected by CVE-2026-2587?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs