{"id":"CVE-2026-0708","summary":"Libucl: libucl: denial of service via embedded null byte in ucl input","details":"A flaw was found in libucl. A remote attacker could exploit this by providing a specially crafted Universal Configuration Language (UCL) input that contains a key with an embedded null byte. This can cause a segmentation fault (SEGV fault) in the `ucl_object_emit` function when parsing and emitting the object, leading to a Denial of Service (DoS) for the affected system.","modified":"2026-07-15T01:49:00.554171410Z","published":"2026-03-17T02:28:08.429Z","database_specific":{"unresolved_ranges":[{"extracted_events":[{"introduced":"3e7f023e184e06f30fb5792dacd9dd0f8b692f1b"},{"last_affected":"3e7f023e184e06f30fb5792dacd9dd0f8b692f1b"}],"source":"AFFECTED_FIELD"}],"cna_assigner":"fedora","cwe_ids":["CWE-125"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/0xxx/CVE-2026-0708.json"},"references":[{"type":"ADVISORY","url":"https://access.redhat.com/security/cve/CVE-2026-0708"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/0xxx/CVE-2026-0708.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-0708"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2427770"},{"type":"REPORT","url":"https://github.com/vstakhov/libucl/issues/323"},{"type":"PACKAGE","url":"https://github.com/vstakhov/libucl"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/vstakhov/libucl","events":[{"introduced":"0"},{"last_affected":"058286f4f85e2a66130e8bdaddf402d9c78d259c"}],"database_specific":{"source":"CPE_RANGE","cpe":"cpe:2.3:a:vstakhov:libucl:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"0"},{"last_affected":"0.9.4"}]}}],"versions":["0.9.4","0.9.3","0.9.2","0.9.1","0.9.0","0.8.2","0.8.1","0.8.0","0.7.3","0.7.2","0.7.1","0.6.1","0.5.2","0.5.1","0.4.0","0.2.6","0.2.3","0.2.2","0.2.1","0.2.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-0708.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:H"}]}