{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-1386 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-1386 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-1386 is a medium-severity path traversal vulnerability in AWS Firecracker, published on 23 Jan 2026. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-1386 and fix it if it is affected.\n\nWhat it is: CVE-2026-1386 is a medium-severity path traversal vulnerability in AWS Firecracker, published on 23 Jan 2026. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-1386 in the wild and no public exploit code.\n\nAffected product: AWS Firecracker. 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-2026-1386/ (Markdown: https://insights.sbomify.com/CVE-2026-1386/index.md)","id":"CVE-2026-1386","markdown":"https://insights.sbomify.com/CVE-2026-1386/index.md","name":"CVE-2026-1386","record":{"aliases":["GHSA-36j2-f825-qvgc"],"analysis":{"component_type":"container_or_infrastructure","fix_type":"upgrade","impacts":["data_modify"],"network_reachable":"adjacent_or_local","non_default_config":true,"product_category":"Firecracker microVM","requires_auth":"high_privilege","summary":"Local attackers with write access to jailer directories can overwrite arbitrary host files via symlink attacks during startup if the jailer runs as root.","user_interaction":"not_required","vuln_class":"path_traversal"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"AMZN","cpe":[{"product":"firecracker","vendor":"amazon"}],"cvss":{"score":6,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:N/SI:H/SA:H","version":"4.0"},"cwes":[{"id":"CWE-61","name":"UNIX Symbolic Link (Symlink) Following"}],"description":"A UNIX symbolic link following issue in the jailer component in Firecracker version  v1.13.1 and earlier and 1.14.0 on Linux may allow a local host user with write access to the pre-created jailer directories to overwrite arbitrary host files via a symlink attack during the initialization copy at jailer startup, if the jailer is executed with root privileges. \n\nTo mitigate this issue, users should upgrade to version v1.13.2 or 1.14.1 or above.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":false,"headline":"Arbitrary Host File Overwrite via Symlink in Firecracker Jailer","id":"CVE-2026-1386","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"path_traversal","year":"2026"},"n_packages":0,"n_references":4,"next":{"headline":"Allocation of Resources Without Limits or Throttling in GitLab","id":"CVE-2026-1387"},"packages":[],"prev":{"headline":"Cross-site scripting in fresh Podcaster","id":"CVE-2026-1382"},"products":["Firecracker"],"published":"2026-01-23","related":[{"cvss_score":9.8,"headline":"Memory corruption in n/a","id":"CVE-2019-18960","kev_date_added":null,"published":"2019-12-11"},{"cvss_score":8.7,"headline":"Out-of-bounds Write in Firecracker virtio-pci Transport","id":"CVE-2026-5747","kev_date_added":null,"published":"2026-04-07"},{"cvss_score":7.5,"headline":"Denial of service in n/a","id":"CVE-2020-27174","kev_date_added":null,"published":"2020-10-16"},{"cvss_score":5.9,"headline":"Denial of service in n/a","id":"CVE-2020-16843","kev_date_added":null,"published":"2020-08-04"}],"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":"partial"},"state":"PUBLISHED","updated":"2026-01-23","vendors":["AWS"]},"summary":"Local attackers with write access to jailer directories can overwrite arbitrary host files via symlink attacks during startup if the jailer runs as root.","url":"https://insights.sbomify.com/CVE-2026-1386/"}