{"id":"CVE-2026-35373","state":"PUBLISHED","title":"uutils coreutils ln Local Denial of Service via Improper Handling of Non-UTF-8 Filenames","description":"A logic error in the ln utility of uutils coreutils causes the program to reject source paths containing non-UTF-8 filename bytes when using target-directory forms (e.g., ln SOURCE... DIRECTORY). While GNU ln treats filenames as raw bytes and creates the links correctly, the uutils implementation enforces UTF-8 encoding, resulting in a failure to stat the file and a non-zero exit code. In environments where automated scripts or system tasks process valid but non-UTF-8 filenames common on Unix filesystems, this divergence causes the utility to fail, leading to a local denial of service for those specific operations.","publishedAt":"2026-04-22T16:09:01.705Z","updatedAt":"2026-04-22T17:20:29.756Z","severity":{"score":3.3,"label":"Low","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","source":"canonical"},"assigner":"canonical","products":["Uutils coreutils"],"affected":[{"vendor":"Uutils","product":"coreutils","packageName":"coreutils","defaultStatus":"affected","platforms":["Linux","Unix","macOS"],"collectionURL":"https://github.com/uutils","repo":"https://github.com/uutils/coreutils"}],"references":["https://github.com/uutils/coreutils/pull/11403"],"weaknesses":["CWE-176"],"ingestedAt":"2026-10-29T20:11:40.391Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/35xxx/CVE-2026-35373.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-35373","state":"PUBLISHED","datePublished":"2026-04-22T16:09:01.705Z","dateUpdated":"2026-04-22T17:20:29.756Z","assignerShortName":"canonical","assignerOrgId":"cc1ad9ee-3454-478d-9317-d3e869d708bc","dateReserved":"2026-04-02T12:58:56.088Z"},"containers":{"cna":{"title":"uutils coreutils ln Local Denial of Service via Improper Handling of Non-UTF-8 Filenames","descriptions":[{"lang":"en","value":"A logic error in the ln utility of uutils coreutils causes the program to reject source paths containing non-UTF-8 filename bytes when using target-directory forms (e.g., ln SOURCE... DIRECTORY). While GNU ln treats filenames as raw bytes and creates the links correctly, the uutils implementation enforces UTF-8 encoding, resulting in a failure to stat the file and a non-zero exit code. In environments where automated scripts or system tasks process valid but non-UTF-8 filenames common on Unix filesystems, this divergence causes the utility to fail, leading to a local denial of service for those specific operations."}],"affected":[{"vendor":"Uutils","product":"coreutils","packageName":"coreutils","defaultStatus":"affected","platforms":["Linux","Unix","macOS"],"collectionURL":"https://github.com/uutils","repo":"https://github.com/uutils/coreutils"}],"references":[{"url":"https://github.com/uutils/coreutils/pull/11403","tags":["patch","issue-tracking"]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV3_1":{"version":"3.1","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"LOW","baseSeverity":"LOW","baseScore":3.3,"vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-176","lang":"en","description":"CWE-176: Improper Handling of Unicode Encoding","type":"CWE"}]}],"providerMetadata":{"shortName":"canonical","orgId":"cc1ad9ee-3454-478d-9317-d3e869d708bc","dateUpdated":"2026-04-22T16:09:01.705Z"},"impacts":[{"capecId":"CAPEC-153","descriptions":[{"lang":"en","value":"CAPEC-153: Input Data Manipulation"}]}],"credits":[{"lang":"en","value":"Zellic","type":"finder"}],"source":{"discovery":"EXTERNAL"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-04-22T17:19:57.514800Z","id":"CVE-2026-35373","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-04-22T17:20:29.756Z"}}]}}}