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
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 2%CVSS: 9.8Exploit: None knownExposed: 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)
EG Risk
60(Track)
EG Risk 60/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity98% × 45%
Exploitation2% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
2%
EPSS %ILE
78%
KEV
Not listed

Published

April 11, 2026

Last Modified

April 13, 2026

Advisory Details (1)

Auto-updated Aug 26, 2026
No patch confirmed yet.
generic

ZDI-26-245 - TrendAI™ Zero Day Initiative™ (ZDI)

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 6× in last 7d / 75× 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 205 total refreshes for this CVE.

  1. 2026-08-30 19:17 UTCEPSS rescore
  2. 2026-08-30 01:22 UTCEPSS rescore
  3. 2026-08-28 21:42 UTCEPSS rescore
  4. 2026-08-27 14:25 UTCEPSS rescore
  5. 2026-08-26 14:46 UTCEPSS rescore
  6. 2026-08-25 13:49 UTCEPSS rescore
  7. 2026-08-23 00:19 UTCEPSS rescore
  8. 2026-08-21 23:49 UTCEPSS rescore
  9. 2026-08-20 22:55 UTCEPSS rescore
  10. 2026-08-19 17:04 UTCEPSS rescore
  11. 2026-08-18 13:48 UTCEPSS rescore
  12. 2026-08-17 13:47 UTCEPSS rescore
  13. 2026-08-16 14:56 UTCEPSS rescore
  14. 2026-08-16 11:08 UTCGHSA enrichment
  15. 2026-08-16 06:59 UTCEG score recompute
  16. 2026-08-16 06:59 UTCGHSA enrichment
  17. 2026-08-15 01:30 UTCEPSS rescore
  18. 2026-08-14 22:28 UTCGHSA enrichment
  19. 2026-08-14 18:19 UTCGHSA enrichment
  20. 2026-08-14 13:18 UTCGHSA enrichment
  21. 2026-08-14 09:09 UTCGHSA enrichment
  22. 2026-08-14 05:00 UTCEG score recompute
  23. 2026-08-14 05:00 UTCGHSA enrichment
  24. 2026-08-13 22:00 UTCEPSS rescore
  25. 2026-08-13 09:18 UTCGHSA enrichment
Show 75 more
  1. 2026-08-13 03:30 UTCGHSA enrichment
  2. 2026-08-12 23:21 UTCGHSA enrichment
  3. 2026-08-12 19:13 UTCEG score recompute
  4. 2026-08-12 19:13 UTCGHSA enrichment
  5. 2026-08-12 13:51 UTCEPSS rescore
  6. 2026-08-11 23:31 UTCGHSA enrichment
  7. 2026-08-11 19:22 UTCEG score recompute
  8. 2026-08-11 19:22 UTCGHSA enrichment
  9. 2026-08-11 07:05 UTCGHSA enrichment
  10. 2026-08-11 02:54 UTCEG score recompute
  11. 2026-08-11 02:54 UTCGHSA enrichment
  12. 2026-08-11 00:00 UTCEPSS rescore
  13. 2026-08-10 09:32 UTCGHSA enrichment
  14. 2026-08-10 05:23 UTCGHSA enrichment
  15. 2026-08-10 01:15 UTCGHSA enrichment
  16. 2026-08-09 21:05 UTCGHSA enrichment
  17. 2026-08-09 16:57 UTCGHSA enrichment
  18. 2026-08-09 12:48 UTCGHSA enrichment
  19. 2026-08-09 08:34 UTCGHSA enrichment
  20. 2026-08-09 04:25 UTCEG score recompute
  21. 2026-08-09 04:25 UTCGHSA enrichment
  22. 2026-08-08 16:37 UTCEPSS rescore
  23. 2026-08-08 11:22 UTCGHSA enrichment
  24. 2026-08-08 06:46 UTCGHSA enrichment
  25. 2026-08-08 02:37 UTCGHSA enrichment
  26. 2026-08-07 22:28 UTCGHSA enrichment
  27. 2026-08-07 18:19 UTCEG score recompute
  28. 2026-08-07 18:19 UTCGHSA enrichment
  29. 2026-08-07 14:11 UTCGHSA enrichment
  30. 2026-08-06 17:30 UTCEG score recompute
  31. 2026-08-06 17:30 UTCGHSA enrichment
  32. 2026-08-06 13:47 UTCEPSS rescore
  33. 2026-08-06 12:38 UTCGHSA enrichment
  34. 2026-08-06 07:56 UTCGHSA enrichment
  35. 2026-08-06 03:47 UTCGHSA enrichment
  36. 2026-08-05 23:38 UTCEG score recompute
  37. 2026-08-05 23:38 UTCGHSA enrichment
  38. 2026-08-05 19:17 UTCEPSS rescore
  39. 2026-08-04 15:10 UTCEPSS rescore
  40. 2026-08-04 10:39 UTCEPSS rescore
  41. 2026-08-04 02:10 UTCGHSA enrichment
  42. 2026-08-03 21:53 UTCEG score recompute
  43. 2026-08-03 21:53 UTCGHSA enrichment
  44. 2026-08-03 10:36 UTCEPSS rescore
  45. 2026-08-03 02:07 UTCGHSA enrichment
  46. 2026-08-02 21:57 UTCGHSA enrichment
  47. 2026-08-02 17:48 UTCGHSA enrichment
  48. 2026-08-02 13:39 UTCEG score recompute
  49. 2026-08-02 13:39 UTCGHSA enrichment
  50. 2026-08-02 02:27 UTCEPSS rescore
  51. 2026-08-01 04:16 UTCEPSS rescore
  52. 2026-07-30 16:28 UTCEPSS rescore
  53. 2026-07-30 01:30 UTCEPSS rescore
  54. 2026-07-30 01:30 UTCEPSS rescore
  55. 2026-07-28 15:37 UTCEPSS rescore
  56. 2026-07-27 14:14 UTCEPSS rescore
  57. 2026-07-26 14:54 UTCEPSS rescore
  58. 2026-07-26 14:54 UTCEPSS rescore
  59. 2026-07-25 14:18 UTCEPSS rescore
  60. 2026-07-25 14:18 UTCEPSS rescore
  61. 2026-07-24 14:18 UTCEPSS rescore
  62. 2026-07-24 14:18 UTCEPSS rescore
  63. 2026-07-23 14:18 UTCEPSS rescore
  64. 2026-07-23 14:18 UTCEPSS rescore
  65. 2026-07-23 03:18 UTCEG score recompute
  66. 2026-07-22 14:08 UTCEPSS rescore
  67. 2026-07-22 14:08 UTCEPSS rescore
  68. 2026-07-21 15:25 UTCEPSS rescore
  69. 2026-07-21 15:25 UTCEPSS rescore
  70. 2026-07-20 17:08 UTCEPSS rescore
  71. 2026-07-19 14:31 UTCEPSS rescore
  72. 2026-07-19 02:29 UTCEPSS rescore
  73. 2026-07-18 10:04 UTCEPSS rescore
  74. 2026-07-16 17:03 UTCEPSS rescore
  75. 2026-07-15 16:57 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 2% probability of exploitation in the next 30 days, which ranks it in the top 21.7% of all scored CVEs.
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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