{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-9255 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-9255 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-9255 is a high-severity missing authorization vulnerability in AWS Kiro CLI, published on 22 May 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-9255 and fix it if it is affected.\n\nWhat it is: CVE-2026-9255 is a high-severity missing authorization vulnerability in AWS Kiro CLI, published on 22 May 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2026-9255 in the wild and no public exploit code.\n\nAffected product: AWS Kiro CLI. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-9255/ (Markdown: https://insights.sbomify.com/CVE-2026-9255/index.md)","id":"CVE-2026-9255","markdown":"https://insights.sbomify.com/CVE-2026-9255/index.md","name":"CVE-2026-9255","record":{"aliases":["GHSA-cv6r-hx5v-c4m6"],"analysis":{"component_type":"developer_tool","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Kiro CLI","requires_auth":"none","summary":"A local attacker can execute arbitrary tools and shell commands without user approval by piping crafted content to Kiro CLI stdin.","user_interaction":"required","vuln_class":"missing_authorization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"AMZN","cpe":[{"product":"kiro_cli","vendor":"amazon"}],"cvss":{"score":8.4,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-862","name":"Missing Authorization"}],"description":"Missing input source validation in the tool authorization prompt in Kiro CLI before 1.28.0 allows a local attacker to execute arbitrary tools, including shell commands, without user approval by crafting content that is piped to kiro-cli via stdin.\n\nWe recommend you to upgrade to kiro-cli version 1.28.0 or later.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":null,"headline":"Tool Execution Without Authorization via Piped Stdin in Kiro CLI","id":"CVE-2026-9255","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"missing_authorization","year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"NGINX ngx_http_rewrite_module vulnerability","id":"CVE-2026-9256"},"packages":[],"prev":{"headline":"Command Injection Vulnerability in Parent Control of Multiple TP-Link Archer Devices","id":"CVE-2026-9254"},"products":["Kiro CLI"],"published":"2026-05-22","related":[{"cvss_score":8.5,"headline":"Executable Resolution from Untrusted Project Directory in Kiro CLI on Windows","id":"CVE-2026-18657","kev_date_added":null,"published":"2026-08-04"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-05-23","vendors":["AWS"]},"summary":"A local attacker can execute arbitrary tools and shell commands without user approval by piping crafted content to Kiro CLI stdin.","url":"https://insights.sbomify.com/CVE-2026-9255/"}