{"answers":{"affected":"2 open source packages ship an affected version, including uu_comm. It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-35346 exists.","fix":"Upgrade uu_comm to 0.6.0 or later.","what":"CVE-2026-35346 is a low-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-2026-35346 and fix it if it is affected.\n\nWhat it is: CVE-2026-35346 is a low-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: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-35346 exists.\n\nAffected packages and fixed versions:\n- uu_comm (crates.io): affected all versions; fixed in 0.6.0\n- uu_comm (crates.io): affected all versions; fixed in 0.6.0\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-2026-35346/ (Markdown: https://insights.sbomify.com/CVE-2026-35346/index.md)","id":"CVE-2026-35346","markdown":"https://insights.sbomify.com/CVE-2026-35346/index.md","name":"CVE-2026-35346","record":{"aliases":["DEBIAN-CVE-2026-35346","GHSA-6gcw-w7cp-94g9","UBUNTU-CVE-2026-35346"],"analysis":{"component_type":"library","fix_type":"patch","impacts":["data_modify"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"uutils coreutils","requires_auth":"low_privilege","summary":"The comm utility in uutils coreutils silently corrupts data by replacing invalid UTF-8 bytes, affecting users comparing binary or legacy-encoded files.","user_interaction":"not_required","vuln_class":"other"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"canonical","cpe":[{"product":"coreutils","vendor":"uutils"}],"cvss":{"score":3.3,"severity":"low","source":"cna","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-176","name":"Improper Handling of Unicode Encoding"}],"description":"The comm utility in uutils coreutils silently corrupts data by performing lossy UTF-8 conversion on all output lines. The implementation uses String::from_utf8_lossy(), which replaces invalid UTF-8 byte sequences with the Unicode replacement character (U+FFFD). This behavior differs from GNU comm, which processes raw bytes and preserves the original input. This results in corrupted output when the utility is used to compare binary files or files using non-UTF-8 legacy encodings.","ecosystems":["crates.io"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"uutils coreutils comm Silent Data Corruption via Lossy UTF-8 Normalization","id":"CVE-2026-35346","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"crates.io","product":null,"products":[],"type":"other","year":"2026"},"n_packages":2,"n_references":3,"next":{"headline":"uutils coreutils comm Silent Data Loss or Denial of Service via Improper Input Validation","id":"CVE-2026-35347"},"packages":[{"ecosystem":"crates.io","fixed":["0.6.0"],"introduced":["0"],"last_affected":[],"package":"uu_comm","purl":null,"source":"GHSA-6gcw-w7cp-94g9"},{"ecosystem":"crates.io","fixed":["0.6.0"],"introduced":["0"],"last_affected":[],"package":"uu_comm","purl":"pkg:cargo/uu_comm","source":"GHSA-6gcw-w7cp-94g9"}],"prev":{"headline":"uutils coreutils tail Privileged Information Disclosure via Symlink Replacement Race","id":"CVE-2026-35345"},"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":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-04-22","vendors":["Uutils"]},"summary":"The comm utility in uutils coreutils silently corrupts data by replacing invalid UTF-8 bytes, affecting users comparing binary or legacy-encoded files.","url":"https://insights.sbomify.com/CVE-2026-35346/"}