{"id":"CVE-2026-108063","aliases":["DEBIAN-CVE-2026-108063","EUVD-2026-95776","GHSA-p5cq-8qqj-g6g8","UBUNTU-CVE-2026-108063"],"status":"published","title":"Libhangul: null pointer dereference in hanja_new() when looking up a malformed hanja dictionary entry","description":"A flaw was found in libhangul. When parsing Hanja dictionary files, the library fails to verify that an entry contains a valid value alongside its key. By providing a specially crafted dictionary file to an application that queries it, an attacker can trigger an unexpected application crash, resulting in a Denial of Service (DoS).","severity":{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00118,"percentile":0.0173,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-476"],"published":"2026-10-09T13:26:59Z","modified":"2026-11-05T15:55:56Z","affected":[{"source":"osv","ecosystem":"Debian:12","package":"libhangul","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.1.0+git20191003-2","0.1.0+git20230314-1","0.1.0+git20230314-2","0.2.0-1"]},{"source":"osv","ecosystem":"Debian:13","package":"libhangul","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.2.0-1"]},{"source":"osv","ecosystem":"Debian:14","package":"libhangul","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.2.0-1"]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"libhangul","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.1.0-3"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"libhangul","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.1.0-4","0.1.0+git20170815-1","0.1.0+git20170815-2"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"libhangul","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.1.0+git20170815-2","0.1.0+git20191003-1","0.1.0+git20191003-2"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"libhangul","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.1.0+git20191003-2ubuntu2","0.1.0+git20191003-2ubuntu3"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"libhangul","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.1.0+git20230314-1","0.1.0+git20230314-2","0.1.0+git20230314-2build1"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"libhangul","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.2.0-1build1"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"libhangul","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.2.0-1","0.2.0-1build1"]}],"products":[{"vendor":"red hat","product":"red hat enterprise linux 10"},{"vendor":"red hat","product":"red hat enterprise linux 6"},{"vendor":"red hat","product":"red hat enterprise linux 7"},{"vendor":"red hat","product":"red hat enterprise linux 8"},{"vendor":"red hat","product":"red hat enterprise linux 9"}],"references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-108063","tags":["vdb-entry","x_refsource_REDHAT"]},{"url":"https://github.com/libhangul/libhangul/blob/5094421d9586294b2aad09924b9a54e2e6060f06/hangul/hanja.c"},{"url":"https://github.com/libhangul/libhangul/issues/106"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-108063"},{"url":"https://github.com/advisories/GHSA-p5cq-8qqj-g6g8"},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-108063","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-108063","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-108063","tags":["report"]},{"url":"access.redhat.com/downloads/content/package-browser","tags":["report"]},{"url":"github.com/libhangul/libhangul/issues/106","tags":["report"]},{"url":"security-tracker.debian.org/tracker/cve-2026-108063","tags":["report"]},{"url":"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1150512","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-108063","title":"Libhangul: null pointer dereference in hanja_new() when looking up a malformed hanja dictionary entry","description":"A flaw was found in libhangul. When parsing Hanja dictionary files, the library fails to verify that an entry contains a valid value alongside its key. By providing a specially crafted dictionary file to an application that queries it, an attacker can trigger an unexpected application crash, resulting in a Denial of Service (DoS).","status":"published","published":"2026-10-09T13:26:59.432Z","modified":"2026-11-05T15:55:56.455Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna"}],"cwes":["CWE-476"],"updated_at":"2026-11-05T16:36:34.343037Z"}],"euvd":[{"id":"EUVD-2026-95776","description":"A flaw was found in libhangul. When parsing Hanja dictionary files, the library fails to verify that an entry contains a valid value alongside its key. By providing a specially crafted dictionary file to an application that queries it, an attacker can trigger an unexpected application crash, resulting in a Denial of Service (DoS).","status":"published","published":"2026-10-09T13:26:59Z","modified":"2026-11-05T15:55:56Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-05T18:00:58.868629Z"}],"ghsa":[{"id":"GHSA-p5cq-8qqj-g6g8","title":"A flaw was found in libhangul. When parsing Hanja dictionary files, the library fails to verify...","description":"A flaw was found in libhangul. When parsing Hanja dictionary files, the library fails to verify that an entry contains a valid value alongside its key. By providing a specially crafted dictionary file to an application that queries it, an attacker can trigger an unexpected application crash, resulting in a Denial of Service (DoS).","status":"published","published":"2026-10-09T15:31:31Z","modified":"2026-10-09T15:31:37Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-476"],"updated_at":"2026-11-02T15:13:00.589729Z"}],"nvd":[{"id":"CVE-2026-108063","description":"A flaw was found in libhangul. When parsing Hanja dictionary files, the library fails to verify that an entry contains a valid value alongside its key. By providing a specially crafted dictionary file to an application that queries it, an attacker can trigger an unexpected application crash, resulting in a Denial of Service (DoS).","status":"published","published":"2026-10-09T14:17:20.13Z","modified":"2026-11-05T16:17:32.32Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"secondary"}],"cwes":["CWE-476"],"updated_at":"2026-11-05T19:56:00.556424Z"}],"osv":[{"id":"DEBIAN-CVE-2026-108063","description":"A flaw was found in libhangul. When parsing Hanja dictionary files, the library fails to verify that an entry contains a valid value alongside its key. By providing a specially crafted dictionary file to an application that queries it, an attacker can trigger an unexpected application crash, resulting in a Denial of Service (DoS).","status":"published","published":"2026-10-09T14:17:20.13Z","modified":"2026-10-10T18:00:10.686907502Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:45:49.381767Z"},{"id":"UBUNTU-CVE-2026-108063","description":"A flaw was found in libhangul. When parsing Hanja dictionary files, the library fails to verify that an entry contains a valid value alongside its key. By providing a specially crafted dictionary file to an application that queries it, an attacker can trigger an unexpected application crash, resulting in a Denial of Service (DoS).","status":"published","published":"2026-10-09T14:17:00Z","modified":"2026-10-17T12:58:01.890653676Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"},{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T16:55:59.130573Z"}]}}