{"answers":{"affected":"2 open source packages ship an affected version, including uu_install. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-35356 in the wild and no public exploit code.","fix":"Upgrade uu_install to 0.7.0 or later.","what":"CVE-2026-35356 is a medium-severity vulnerability in Uutils coreutils, published on 22 Apr 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-2026-35356 and fix it if it is affected.\n\nWhat it is: CVE-2026-35356 is a medium-severity vulnerability in Uutils coreutils, published on 22 Apr 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-2026-35356 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- uu_install (crates.io): affected all versions; fixed in 0.7.0\n- uu_install (crates.io): affected all versions; fixed in 0.7.0\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-2026-35356/ (Markdown: https://insights.sbomify.com/CVE-2026-35356/index.md)","id":"CVE-2026-35356","markdown":"https://insights.sbomify.com/CVE-2026-35356/index.md","name":"CVE-2026-35356","record":{"aliases":["DEBIAN-CVE-2026-35356","GHSA-gwm6-q8ch-hcfr","UBUNTU-CVE-2026-35356"],"analysis":{"component_type":"operating_system","fix_type":"patch","impacts":["data_modify","privilege_escalation"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"uutils coreutils","requires_auth":"low_privilege","summary":"An attacker can exploit a race condition in the install utility to overwrite arbitrary files via symlink manipulation, potentially leading to privilege escalation.","user_interaction":"not_required","vuln_class":"race_condition"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"canonical","cpe":[{"product":"coreutils","vendor":"uutils"}],"cvss":{"score":6.3,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-367","name":"Time-of-check Time-of-use (TOCTOU) Race Condition"}],"description":"A Time-of-Check to Time-of-Use (TOCTOU) vulnerability exists in the install utility of uutils coreutils when using the -D flag. The command creates parent directories and subsequently performs a second path resolution to create the target file, neither of which is anchored to a directory file descriptor. An attacker with concurrent write access can replace a path component with a symbolic link between these operations, redirecting the privileged write to an arbitrary file system location.","ecosystems":["crates.io"],"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":"uutils coreutils install Arbitrary File Overwrite with -D via Path Component Symlink Race","id":"CVE-2026-35356","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"crates.io","product":null,"products":[],"type":"race_condition","year":"2026"},"n_packages":2,"n_references":2,"next":{"headline":"uutils coreutils cp Information Disclosure via Permission Handling Race","id":"CVE-2026-35357"},"packages":[{"ecosystem":"crates.io","fixed":["0.7.0"],"introduced":["0"],"last_affected":[],"package":"uu_install","purl":null,"source":"GHSA-gwm6-q8ch-hcfr"},{"ecosystem":"crates.io","fixed":["0.7.0"],"introduced":["0"],"last_affected":[],"package":"uu_install","purl":"pkg:cargo/uu_install","source":"GHSA-gwm6-q8ch-hcfr"}],"prev":{"headline":"uutils coreutils install Arbitrary File Overwrite via Symlink TOCTOU Race","id":"CVE-2026-35355"},"products":["coreutils"],"published":"2026-04-22","related":[{"cvss_score":7.3,"headline":"uutils coreutils chmod Path Traversal Bypass of --preserve-root","id":"CVE-2026-35338","kev_date_added":null,"published":"2026-04-22"},{"cvss_score":7.2,"headline":"uutils coreutils chroot Local Privilege Escalation and chroot Escape in via Name Service Switch (NSS) Injection","id":"CVE-2026-35368","kev_date_added":null,"published":"2026-04-22"},{"cvss_score":7.1,"headline":"uutils coreutils mkfifo Unauthorized Permission Change on Existing Files","id":"CVE-2026-35341","kev_date_added":null,"published":"2026-04-22"},{"cvss_score":7,"headline":"uutils coreutils mkfifo Privilege Escalation via TOCTOU Race Condition","id":"CVE-2026-35352","kev_date_added":null,"published":"2026-04-22"},{"cvss_score":6.7,"headline":"uutils coreutils Path-Based Safety Bypass with --preserve-root","id":"CVE-2026-35349","kev_date_added":null,"published":"2026-04-22"},{"cvss_score":6.6,"headline":"uutils coreutils cp Unexpected Privileged Executable Creation with -p","id":"CVE-2026-35350","kev_date_added":null,"published":"2026-04-22"},{"cvss_score":6.6,"headline":"uutils coreutils mv Denial of Service and Data Duplication via Improper Symlink Expansion","id":"CVE-2026-35365","kev_date_added":null,"published":"2026-04-22"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"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":"2026-04-22","vendors":["Uutils"]},"summary":"An attacker can exploit a race condition in the install utility to overwrite arbitrary files via symlink manipulation, potentially leading to privilege escalation.","url":"https://insights.sbomify.com/CVE-2026-35356/"}