{"id":"CVE-2026-35347","summary":"uutils coreutils comm Silent Data Loss or Denial of Service via Improper Input Validation","details":"The comm utility in uutils coreutils incorrectly consumes data from non-regular file inputs before performing comparison operations. The are_files_identical function opens and reads from both input paths to compare content without first verifying if the paths refer to regular files. If an input path is a FIFO or a pipe, this pre-read operation drains the stream, leading to silent data loss before the actual comparison logic is executed. Additionally, the utility may hang indefinitely if it attempts to pre-read from infinite streams like /dev/zero.","aliases":["GHSA-3wfc-mgpm-9rq6"],"modified":"2026-07-08T08:12:59.370489989Z","published":"2026-04-22T16:07:54.366Z","database_specific":{"cwe_ids":["CWE-20"],"cna_assigner":"canonical","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/35xxx/CVE-2026-35347.json"},"references":[{"type":"WEB","url":"https://github.com/uutils"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/35xxx/CVE-2026-35347.json"},{"type":"ADVISORY","url":"https://github.com/uutils/coreutils/releases/tag/0.6.0"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-35347"},{"type":"FIX","url":"https://github.com/uutils/coreutils/pull/9545"},{"type":"PACKAGE","url":"https://github.com/uutils/coreutils"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/uutils/coreutils","events":[{"introduced":"0"},{"fixed":"2319a99057d11b0c9744c885df84806eea019166"}],"database_specific":{"source":["AFFECTED_FIELD","CPE_RANGE","REFERENCES"],"cpe":"cpe:2.3:a:uutils:coreutils:*:*:*:*:*:rust:*:*","extracted_events":[{"introduced":"0"},{"fixed":"0.6.0"}]}}],"versions":["latest-commit","0.5.0","0.4.0","0.3.0","0.2.2","0.2.0","0.1.0","0.0.30-delete","0.0.30","0.0.29","0.0.28","0.0.27","0.0.26","0.0.25","0.0.24","0.0.23","0.0.22","0.0.21","0.0.20","0.0.19","0.0.18","0.0.17","0.0.16","0.0.15","0.0.14","0.0.13","0.0.12","0.0.9","0.0.8","0.0.7","0.0.6","0.0.5","0.0.3","0.0.2","0.0.1"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-35347.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L"}]}