CVE-2026-5059

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-04-11. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 2%CVSS: 9.8Exploit: NoneExposed: 0

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

aws-mcp-server AWS CLI Command Injection Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of aws-mcp-server. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the handling of the allowed commands list. The issue results from the lack of proper validation of a user-supplied string before using it to execute a system call. An attacker can leverage this vulnerability to execute code in the context of the MCP server. Was ZDI-CAN-27969.

CVSS v3
9.8
EG Score
9.8(medium)
EPSS
77.4%
KEV
Not listed

Published

April 11, 2026

Last Modified

April 13, 2026

Advisory Details (1)

Auto-updated May 18, 2026
No patch confirmed yet.
generic

ZDI-26-245 | Zero Day Initiative

https://www.zerodayinitiative.com/advisories/ZDI-26-245/

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
pipaws-mcp—ghsa

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(1 across 1 ecosystem)
PyPI(1)
PackageVulnerable rangeFixed inDependents
aws-mcp1.5.4, 1.5.5, 1.5.6, 1.6.0, 1.7.0——

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 12× in last 7d / 46× 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 129 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-5059?
CVE-2026-5059 is a critical vulnerability published on April 11, 2026. aws-mcp-server AWS CLI Command Injection Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of aws-mcp-server. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling…
When was CVE-2026-5059 disclosed?
CVE-2026-5059 was first published in the National Vulnerability Database on April 11, 2026, with the most recent update on April 13, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-5059 actively exploited?
CVE-2026-5059 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 77.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-5059?
CVE-2026-5059 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-5059?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-5059, 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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