{"answers":{"affected":"","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-85526 exists.","fix":"Apply the vendor's patch.","what":"CVE-2026-85526 is a critical path traversal vulnerability in Canonical LXD, published on 28 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-85526 and fix it if it is affected.\n\nWhat it is: CVE-2026-85526 is a critical path traversal vulnerability in Canonical LXD, published on 28 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-85526 exists.\n\nAffected product: Canonical LXD. 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-2026-85526/ (Markdown: https://insights.sbomify.com/CVE-2026-85526/index.md)","id":"CVE-2026-85526","markdown":"https://insights.sbomify.com/CVE-2026-85526/index.md","name":"CVE-2026-85526","record":{"aliases":["DEBIAN-CVE-2026-85526","GHSA-h85r-gjgx-g2rv","UBUNTU-CVE-2026-85526"],"analysis":{"component_type":"container_or_infrastructure","fix_type":"patch","impacts":["data_modify","privilege_escalation"],"network_reachable":"yes","non_default_config":false,"product_category":"LXD container manager","requires_auth":"low_privilege","summary":"Authenticated users can delete or replace arbitrary host files as root via path traversal in LXD Btrfs backup imports.","user_interaction":"not_required","vuln_class":"path_traversal"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"canonical","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-22","name":"Improper Limitation of a Pathname to a Restricted Directory"}],"description":"Path traversal in the Btrfs storage driver (unpackVolume) in Canonical LXD on Linux allows an authenticated user with instance creation privileges to delete or replace arbitrary files and directories on the host filesystem as root via a crafted subvolumes[].path entry in backup/optimized_header.yaml during a btrfs optimized backup import.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"Path traversal via Btrfs optimized-backup subvolumes[].path enables root file/dir manipulation in LXD","id":"CVE-2026-85526","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"path_traversal","year":"2026"},"n_packages":0,"n_references":6,"next":{"headline":"Snowflake JDBC Driver auto-configuration account validation permits credential redirection","id":"CVE-2026-85528"},"packages":[],"prev":{"headline":"Improper OCSP response validation in Snowflake drivers","id":"CVE-2026-85525"},"products":["LXD"],"published":"2026-09-28","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":"poc","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-09-29","vendors":["Canonical"]},"summary":"Authenticated users can delete or replace arbitrary host files as root via path traversal in LXD Btrfs backup imports.","url":"https://insights.sbomify.com/CVE-2026-85526/"}