{"id":"CVE-2026-18657","aliases":["EUVD-2026-52914","GHSA-vr58-qjgp-x52v"],"status":"published","title":"Executable Resolution from Untrusted Project Directory in Kiro CLI on Windows","description":"An uncontrolled search path element in Kiro CLI before version 2.10.0 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 starts Kiro CLI in the directory.\n\n\n\nTo remediate this issue, users should upgrade to version 2.10.0 or higher.","severity":{"version":"4.0","score":8.5,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00233,"percentile":0.143,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-427"],"published":"2026-08-04T19:38:23Z","modified":"2026-10-24T16:10:00Z","products":[{"vendor":"amazon","product":"kiro cli"},{"vendor":"amazon","product":"kiro_cli"},{"vendor":"aws","product":"kiro cli"}],"references":[{"url":"https://kiro.dev/changelog/cli/2-10/","tags":["release-notes","patch","Release Notes"]},{"url":"https://aws.amazon.com/security/security-bulletins/2026-074-aws/","tags":["vendor-advisory","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-18657"},{"url":"https://aws.amazon.com/security/security-bulletins/2026-074-aws"},{"url":"https://kiro.dev/changelog/cli/2-10"},{"url":"https://github.com/advisories/GHSA-vr58-qjgp-x52v"}],"sources":{"cve":[{"id":"CVE-2026-18657","title":"Executable Resolution from Untrusted Project Directory in Kiro CLI on Windows","description":"An uncontrolled search path element in Kiro CLI before version 2.10.0 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 starts Kiro CLI in the directory.\n\n\n\nTo remediate this issue, users should upgrade to version 2.10.0 or higher.","status":"published","published":"2026-08-04T19:38:23.912Z","modified":"2026-08-05T03:57:21.629Z","cvss":[{"version":"4.0","score":8.5,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna"},{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-427"],"updated_at":"2026-11-02T14:20:12.60856Z"}],"euvd":[{"id":"EUVD-2026-52914","description":"An uncontrolled search path element in Kiro CLI before version 2.10.0 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 starts Kiro CLI in the directory.\n\n\n\nTo remediate this issue, users should upgrade to version 2.10.0 or higher.","status":"published","published":"2026-08-04T19:38:23Z","modified":"2026-08-05T03:57:21Z","cvss":[{"version":"4.0","score":8.5,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"high"}],"updated_at":"2026-11-02T18:02:22.159181Z"}],"ghsa":[{"id":"GHSA-vr58-qjgp-x52v","title":"An uncontrolled search path element in Kiro CLI before version 2.10.0 on Windows might allow a...","description":"An uncontrolled search path element in Kiro CLI before version 2.10.0 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 starts Kiro CLI in the directory.\n\n\n\nTo remediate this issue, users should upgrade to version 2.10.0 or higher.","status":"published","published":"2026-08-04T21:30:29Z","modified":"2026-08-04T21:30:37Z","cvss":[{"version":"4.0","score":8.5,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high"},{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-427"],"updated_at":"2026-11-02T15:10:06.083807Z"}],"nvd":[{"id":"CVE-2026-18657","description":"An uncontrolled search path element in Kiro CLI before version 2.10.0 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 starts Kiro CLI in the directory.\n\n\n\nTo remediate this issue, users should upgrade to version 2.10.0 or higher.","status":"published","published":"2026-08-04T20:16:50.57Z","modified":"2026-10-24T16:10:00.153Z","cvss":[{"version":"4.0","score":8.5,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high","assessor":"secondary"},{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-427"],"updated_at":"2026-11-02T14:12:34.643497Z"}]}}