{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-34078 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2026-34078 is a critical path traversal vulnerability in flatpak, published on 7 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-34078 and fix it if it is affected.\n\nWhat it is: CVE-2026-34078 is a critical path traversal vulnerability in flatpak, published on 7 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-34078 in the wild and no public exploit code.\n\nAffected product: flatpak. 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-2026-34078/ (Markdown: https://insights.sbomify.com/CVE-2026-34078/index.md)","id":"CVE-2026-34078","markdown":"https://insights.sbomify.com/CVE-2026-34078/index.md","name":"CVE-2026-34078","record":{"aliases":["CLSA-2026-1780908222","CLSA-2026-1781603962","CLSA-2026-1792427048","CLSA-2026-1792427434","DEBIAN-CVE-2026-34078","GHSA-cc2q-qc34-jprg","UBUNTU-CVE-2026-34078"],"analysis":{"component_type":"operating_system","fix_type":"upgrade","impacts":["code_execution","data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"Linux sandboxing framework","requires_auth":"none","summary":"Attackers can escape the Flatpak sandbox to access host files and execute code on the host system via symlink manipulation.","user_interaction":"not_required","vuln_class":"path_traversal"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"flatpak","vendor":"flatpak"}],"cvss":{"score":9.3,"severity":"critical","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-59","name":"Improper Link Resolution Before File Access"},{"id":"CWE-61","name":"UNIX Symbolic Link (Symlink) Following"}],"description":"Flatpak is a Linux application sandboxing and distribution framework. Prior to 1.16.4, the Flatpak portal accepts paths in the sandbox-expose options which can be app-controlled symlinks pointing at arbitrary paths. Flatpak run mounts the resolved host path in the sandbox. This gives apps access to all host files and can be used as a primitive to gain code execution in the host context. This vulnerability is fixed in 1.16.4.","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":"Flatpak has a complete sandbox escape leading to host file access and code execution in the host context","id":"CVE-2026-34078","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":"Flatpak affected by arbitrary file deletion on the host filesystem","id":"CVE-2026-34079"},"packages":[],"prev":{"headline":"React Router vulnerable to Denial of Service via reflected user input in single-fetch","id":"CVE-2026-34077"},"products":["flatpak"],"published":"2026-04-07","related":[{"cvss_score":10,"headline":"TIOCLINUX can send commands outside sandbox if running on a virtual console","id":"CVE-2023-28100","kev_date_added":null,"published":"2023-03-16"},{"cvss_score":9,"headline":"Security feature bypass in n/a","id":"CVE-2019-10063","kev_date_added":null,"published":"2019-03-26"},{"cvss_score":8.8,"headline":"Security feature bypass in n/a","id":"CVE-2018-6560","kev_date_added":null,"published":"2018-02-02"},{"cvss_score":8.7,"headline":"Flatpak affected by arbitrary file deletion on the host filesystem","id":"CVE-2026-34079","kev_date_added":null,"published":"2026-04-07"},{"cvss_score":5,"headline":"Flatpak metadata with ANSI control codes can cause misleading terminal output","id":"CVE-2023-28101","kev_date_added":null,"published":"2023-03-16"}],"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":"yes","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-07-15","vendors":["flatpak"]},"summary":"Attackers can escape the Flatpak sandbox to access host files and execute code on the host system via symlink manipulation.","url":"https://insights.sbomify.com/CVE-2026-34078/"}