CVE-2026-0856

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-05-20. NVD baseline CVSS 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.8Exploit: NoneExposed: 0

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

Improper Access Control vulnerability in Mesalvo Meona Client Launcher Component, Mesalvo Meona Server Component enables a normal user gaining access to the admin panel. This issue affects Meona Client Launcher Component: through 19.06.2020 15:11:49; Meona Server Component: through 2025.04 5+323020.

CVSS v3
7.8
EG Score
7.8(medium)
EPSS
2.7%
KEV
Not listed

Published

May 20, 2026

Last Modified

May 20, 2026

Advisory Details (1)

Auto-updated May 20, 2026
No patch confirmed yet.
generic

Prescribing Security: Uncovering 5 CVEs in a Healthcare Application | SecCore GmbH

https://seccore.at/blog/cves-meona/

Vendor Advisories for CVE-2026-0856(1)

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

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 6× in last 7d / 55× 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 164 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-0856?
CVE-2026-0856 is a high vulnerability published on May 20, 2026. Improper Access Control vulnerability in Mesalvo Meona Client Launcher Component, Mesalvo Meona Server Component enables a normal user gaining access to the admin panel. This issue affects Meona Client Launcher Component: through 19.06.2020 15:11:49; Meona Server Component: through 2025.04 5+323020.
When was CVE-2026-0856 disclosed?
CVE-2026-0856 was first published in the National Vulnerability Database on May 20, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-0856 actively exploited?
CVE-2026-0856 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-0856?
CVE-2026-0856 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2026-0856?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-0856, 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

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