{"id":"CVE-2026-88371","title":"ZBar commit 2ea2ca58 contains an undefined-behavior vulnerability in the Code 128 decode6() function","summary":"ZBar commit 2ea2ca58 contains an undefined-behavior vulnerability in the Code 128 decode6() function. When processing specially crafted Code 128 input, decode_e() can return -1 for an invalid edge pattern, and decode6() subsequently left…","severity":"medium","cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","cwe":["CWE-682"],"published":"2026-09-24","updated":"2026-10-06","sourceUpdated":"2026-10-06T18:16:57.523","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-88371","references":[{"url":"https://github.com/mchehab/zbar/issues/336","label":"cve@mitre.org"},{"url":"https://github.com/mchehab/zbar/issues/336","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"tags":["nvd","cve.org","exploit-available"],"epss":0.00161,"epssPercentile":0.05261,"exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-06T15:41:48.800706Z"},"ingestedAt":"2026-09-24T16:47:15.826Z","slug":"CVE-2026-88371","body":"## Overview\n\nZBar commit 2ea2ca58 contains an undefined-behavior vulnerability in the Code 128 decode6() function. When processing specially crafted Code 128 input, decode_e() can return -1 for an invalid edge pattern, and decode6() subsequently left-shifts this negative signed value while constructing the edge signature. The operation invokes undefined behavior and can terminate trap-mode UBSan builds with SIGILL, resulting in denial of service.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":42,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":12,"ransomware":0},"changes":[{"seq":216640,"id":"CVE-2026-88371","ts":1791310381425,"field":"exploit_available","old":"false","new":"true"},{"seq":216639,"id":"CVE-2026-88371","ts":1791310381425,"field":"cvss","old":null,"new":"5.5"},{"seq":216638,"id":"CVE-2026-88371","ts":1791310381425,"field":"severity","old":"none","new":"medium"}]}