CVE-2026-18656

HIGHPre-NVD 7.87.8—
EchelonGraph scoreHIGH confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-08-04. a secondary CVSS source baseline 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.8Exploit: None knownExposed: 0

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

An uncontrolled search path element in Kiro IDE before version 1.0.228 on Windows might allow a remote unauthenticated actor to execute arbitrary code via a maliciously crafted project directory containing an executable that bypasses workspace trust protections when a local user opens the directory.

To remediate this issue, users should upgrade to version 1.0.228 or higher.

CVSS v3
7.8
EG Score
7.8(high)
EG Risk
35(Track)
EG Risk 35/100SSVC: 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
Severity78% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
6%
KEV
Not listed

Published

August 4, 2026

Last Modified

August 18, 2026

Advisory Details (2)

Auto-updated Aug 4, 2026
No patch confirmed yet.
generic

CVE-2026-18656 & CVE-2026-18657 - Issue with Kiro IDE and CLI - Executable Resolution from Untrusted Project Directory on Windows

https://aws.amazon.com/security/security-bulletins/2026-074-aws/
generic

Agent Focus, Permissions, Custom Agents, and More - Kiro

https://kiro.dev/changelog/ide/1-0/#patch-1-0-228

Vendor Advisories for CVE-2026-18656(2)

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 28× in last 7d / 70× 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.

  1. 2026-08-21 07:16 UTCEG score recompute
  2. 2026-08-21 07:16 UTCGHSA enrichment
  3. 2026-08-20 22:55 UTCEPSS rescore
  4. 2026-08-20 18:25 UTCGHSA enrichment
  5. 2026-08-20 05:34 UTCEG score recompute
  6. 2026-08-20 05:34 UTCGHSA enrichment
  7. 2026-08-19 17:03 UTCEPSS rescore
  8. 2026-08-19 16:42 UTCGHSA enrichment
  9. 2026-08-19 03:47 UTCGHSA enrichment
  10. 2026-08-18 14:56 UTCEG score recompute
  11. 2026-08-18 14:55 UTCGHSA enrichment
  12. 2026-08-18 13:48 UTCEPSS rescore
  13. 2026-08-18 10:47 UTCGHSA enrichment
  14. 2026-08-17 21:56 UTCEG score recompute
  15. 2026-08-17 21:56 UTCGHSA enrichment
  16. 2026-08-17 13:47 UTCEPSS rescore
  17. 2026-08-17 09:05 UTCGHSA enrichment
  18. 2026-08-16 20:15 UTCEG score recompute
  19. 2026-08-16 20:15 UTCGHSA enrichment
  20. 2026-08-16 14:56 UTCEPSS rescore
  21. 2026-08-16 07:24 UTCEG score recompute
  22. 2026-08-16 07:24 UTCGHSA enrichment
  23. 2026-08-16 02:14 UTCEPSS rescore
  24. 2026-08-15 18:34 UTCGHSA enrichment
  25. 2026-08-15 05:43 UTCEG score recompute
Show 45 more
  1. 2026-08-15 05:43 UTCGHSA enrichment
  2. 2026-08-15 01:30 UTCEPSS rescore
  3. 2026-08-14 16:52 UTCGHSA enrichment
  4. 2026-08-14 03:54 UTCEG score recompute
  5. 2026-08-14 03:54 UTCGHSA enrichment
  6. 2026-08-13 22:00 UTCEPSS rescore
  7. 2026-08-13 15:03 UTCGHSA enrichment
  8. 2026-08-13 02:12 UTCEG score recompute
  9. 2026-08-13 02:12 UTCGHSA enrichment
  10. 2026-08-12 13:50 UTCEPSS rescore
  11. 2026-08-12 13:22 UTCGHSA enrichment
  12. 2026-08-12 00:31 UTCEG score recompute
  13. 2026-08-12 00:31 UTCGHSA enrichment
  14. 2026-08-11 13:42 UTCEPSS rescore
  15. 2026-08-11 11:40 UTCEG score recompute
  16. 2026-08-11 11:40 UTCGHSA enrichment
  17. 2026-08-11 00:00 UTCEPSS rescore
  18. 2026-08-10 22:50 UTCGHSA enrichment
  19. 2026-08-10 10:00 UTCGHSA enrichment
  20. 2026-08-09 21:09 UTCEG score recompute
  21. 2026-08-09 21:09 UTCGHSA enrichment
  22. 2026-08-09 13:46 UTCEPSS rescore
  23. 2026-08-09 08:19 UTCGHSA enrichment
  24. 2026-08-08 19:29 UTCEG score recompute
  25. 2026-08-08 19:29 UTCGHSA enrichment
  26. 2026-08-08 16:37 UTCEPSS rescore
  27. 2026-08-08 06:38 UTCGHSA enrichment
  28. 2026-08-07 17:48 UTCEG score recompute
  29. 2026-08-07 17:48 UTCGHSA enrichment
  30. 2026-08-07 04:57 UTCGHSA enrichment
  31. 2026-08-06 16:06 UTCEG score recompute
  32. 2026-08-06 16:06 UTCGHSA enrichment
  33. 2026-08-06 13:46 UTCEPSS rescore
  34. 2026-08-06 05:23 UTCEG score recompute
  35. 2026-08-06 05:23 UTCGHSA enrichment
  36. 2026-08-05 19:17 UTCEPSS rescore
  37. 2026-08-05 16:32 UTCEG score recompute
  38. 2026-08-05 16:32 UTCGHSA enrichment
  39. 2026-08-05 15:29 UTCEG score recompute
  40. 2026-08-05 15:29 UTCGHSA enrichment
  41. 2026-08-05 09:46 UTCEG score recompute
  42. 2026-08-05 09:46 UTCGHSA enrichment
  43. 2026-08-04 20:32 UTCEG score recompute
  44. 2026-08-04 20:06 UTCEG score recompute
  45. 2026-08-04 20:06 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-18656?
CVE-2026-18656 is a high vulnerability published on August 4, 2026. An uncontrolled search path element in Kiro IDE before version 1.0.228 on Windows might allow a remote unauthenticated actor to execute arbitrary code via a maliciously crafted project directory containing an executable that bypasses workspace trust protections when a local user opens the…
When was CVE-2026-18656 disclosed?
CVE-2026-18656 was first published in the National Vulnerability Database on August 4, 2026, with the most recent update on August 18, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-18656 actively exploited?
CVE-2026-18656 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 94.0% of all scored CVEs.
What is the CVSS score of CVE-2026-18656?
CVE-2026-18656 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2026-18656?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-18656, 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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