{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-63343 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2026-63343 is a critical path traversal vulnerability in lxc incus, published on 21 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-63343 and fix it if it is affected.\n\nWhat it is: CVE-2026-63343 is a critical path traversal vulnerability in lxc incus, published on 21 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-63343 in the wild and no public exploit code.\n\nAffected product: lxc incus. 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-2026-63343/ (Markdown: https://insights.sbomify.com/CVE-2026-63343/index.md)","id":"CVE-2026-63343","markdown":"https://insights.sbomify.com/CVE-2026-63343/index.md","name":"CVE-2026-63343","record":{"aliases":["DEBIAN-CVE-2026-63343","GHSA-fmjx-5j3g-997p","UBUNTU-CVE-2026-63343"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["data_read","data_modify"],"network_reachable":"yes","non_default_config":false,"product_category":"Incus container manager","requires_auth":"low_privilege","summary":"Authenticated users can read or overwrite arbitrary host files as root via a malicious metadata.yaml symlink in an image.","user_interaction":"not_required","vuln_class":"path_traversal"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":9.9,"severity":"critical","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-73","name":"External Control of File Name or Path"}],"description":"Incus is a system container and virtual machine manager. Prior to version 7.3.0, a malicious image containing a `metadata.yaml` symlink pointing to an arbitrary host path allows an authenticated Incus user to read or overwrite any file on the host as root via the instance metadata API. The `exec-output` and `templates/` paths were patched in a prior release using `Lstat` rejection and `os.OpenRoot` confinement; `metadata.yaml` was not included in either patch and remains exploitable. Version 7.3.0 patches the issue.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Arbitrary File Read/Write: metadata.yaml symlink in image allows host filesystem access as root","id":"CVE-2026-63343","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"path_traversal","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"AnyIO run_process/open_process ignores extra_groups and can retain parent supplementary groups","id":"CVE-2026-63349"},"packages":[],"prev":{"headline":"Hatchet: Cross-Tenant Durable Task Event Log Disclosure via Missing Authorization Check","id":"CVE-2026-63342"},"products":["incus"],"published":"2026-08-21","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"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":"2026-08-21","vendors":["lxc"]},"summary":"Authenticated users can read or overwrite arbitrary host files as root via a malicious metadata.yaml symlink in an image.","url":"https://insights.sbomify.com/CVE-2026-63343/"}