CVE-2026-5058

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 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-27968.

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 Sep 9, 2026
No patch confirmed yet.
generic

ZDI-26-246 - TrendAI™ Zero Day Initiative™ (ZDI)

https://www.zerodayinitiative.com/advisories/ZDI-26-246/

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 4× in last 7d / 24× 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 216 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2026-5058?
CVE-2026-5058 is a critical vulnerability published on April 11, 2026. aws-mcp-server 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…
When was CVE-2026-5058 disclosed?
CVE-2026-5058 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-2026-5058 actively exploited?
CVE-2026-5058 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 22.3% of all scored CVEs.
What is the CVSS score of CVE-2026-5058?
CVE-2026-5058 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-5058?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-5058, 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.

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