{"id":"CVE-2026-107168","aliases":["DEBIAN-CVE-2026-107168","EUVD-2026-94313","GHSA-rgch-6vg6-rm4p","UBUNTU-CVE-2026-107168"],"status":"published","title":"M17n-lib: parser infinite loop on malformed utf-8 in count_utf_8_chars()","description":"A flaw was found in m17n-lib. By providing crafted input containing an invalid UTF-8 character sequence, an attacker can cause the text parsing function to enter an infinite loop. This issue leads to sustained high CPU utilization, resulting in a Denial of Service (DoS) for the affected application.","severity":{"version":"3.1","score":6.2,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00112,"percentile":0.014,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-835"],"published":"2026-10-07T12:36:35Z","modified":"2026-11-05T15:55:04Z","fixes":[{"ecosystem":"Debian:14","package":"m17n-lib","fixed_in":["1.8.7-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"m17n-lib","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.8.0-6","1.8.2-1","1.8.3-1","1.8.3-2","1.8.4-1","1.8.4-2","1.8.5-1","1.8.6-1","1.8.7-1"]},{"source":"osv","ecosystem":"Debian:13","package":"m17n-lib","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.8.5-1","1.8.6-1","1.8.7-1"]},{"source":"osv","ecosystem":"Debian:14","package":"m17n-lib","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.8.7-1"}]}],"versions":["1.8.5-1","1.8.6-1"]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"m17n-lib","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.6.4-3","1.7.0-1","1.7.0-2","1.7.0-3"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"m17n-lib","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.7.0-3","1.7.0-3build1"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"m17n-lib","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.8.0-2"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"m17n-lib","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.8.0-2build1","1.8.0-3","1.8.0-3build1","1.8.0-3.1","1.8.0-4"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"m17n-lib","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.8.4-1","1.8.4-1build1","1.8.4-1build2"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"m17n-lib","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.8.6-1"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"m17n-lib","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.8.5-1build1","1.8.6-1"]}],"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-2026-107168","tags":["vdb-entry","x_refsource_REDHAT","report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2547409","tags":["issue-tracking","x_refsource_REDHAT","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-107168"},{"url":"https://github.com/advisories/GHSA-rgch-6vg6-rm4p"},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-107168","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-107168","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-107168","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-107168","title":"M17n-lib: parser infinite loop on malformed utf-8 in count_utf_8_chars()","description":"A flaw was found in m17n-lib. By providing crafted input containing an invalid UTF-8 character sequence, an attacker can cause the text parsing function to enter an infinite loop. This issue leads to sustained high CPU utilization, resulting in a Denial of Service (DoS) for the affected application.","status":"published","published":"2026-10-07T12:36:35.48Z","modified":"2026-11-05T15:55:04.646Z","cvss":[{"version":"3.1","score":6.2,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna"}],"cwes":["CWE-835"],"updated_at":"2026-11-05T16:36:34.343037Z"}],"euvd":[{"id":"EUVD-2026-94313","description":"A flaw was found in m17n-lib. By providing crafted input containing an invalid UTF-8 character sequence, an attacker can cause the text parsing function to enter an infinite loop. This issue leads to sustained high CPU utilization, resulting in a Denial of Service (DoS) for the affected application.","status":"published","published":"2026-10-07T12:36:35Z","modified":"2026-11-05T15:55:04Z","cvss":[{"version":"3.1","score":6.2,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-05T18:00:58.868629Z"}],"ghsa":[{"id":"GHSA-rgch-6vg6-rm4p","title":"A flaw was found in m17n-lib. By providing crafted input containing an invalid UTF-8 character...","description":"A flaw was found in m17n-lib. By providing crafted input containing an invalid UTF-8 character sequence, an attacker can cause the text parsing function to enter an infinite loop. This issue leads to sustained high CPU utilization, resulting in a Denial of Service (DoS) for the affected application.","status":"published","published":"2026-10-07T15:31:56Z","modified":"2026-10-07T15:31:56Z","cvss":[{"version":"3.1","score":6.2,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-835"],"updated_at":"2026-11-02T15:12:54.703562Z"}],"nvd":[{"id":"CVE-2026-107168","description":"A flaw was found in m17n-lib. By providing crafted input containing an invalid UTF-8 character sequence, an attacker can cause the text parsing function to enter an infinite loop. This issue leads to sustained high CPU utilization, resulting in a Denial of Service (DoS) for the affected application.","status":"published","published":"2026-10-07T13:17:20.183Z","modified":"2026-11-05T16:17:31.107Z","cvss":[{"version":"3.1","score":6.2,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"secondary"}],"cwes":["CWE-835"],"updated_at":"2026-11-05T19:56:00.556424Z"}],"osv":[{"id":"DEBIAN-CVE-2026-107168","description":"A flaw was found in m17n-lib. By providing crafted input containing an invalid UTF-8 character sequence, an attacker can cause the text parsing function to enter an infinite loop. This issue leads to sustained high CPU utilization, resulting in a Denial of Service (DoS) for the affected application.","status":"published","published":"2026-10-07T13:17:20.183Z","modified":"2026-10-20T04:00:06.410817696Z","cvss":[{"version":"3.1","score":6.2,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:45:49.381767Z"},{"id":"UBUNTU-CVE-2026-107168","description":"A flaw was found in m17n-lib. By providing crafted input containing an invalid UTF-8 character sequence, an attacker can cause the text parsing function to enter an infinite loop. This issue leads to sustained high CPU utilization, resulting in a Denial of Service (DoS) for the affected application.","status":"published","published":"2026-10-07T13:17:00Z","modified":"2026-10-17T12:58:00.937240317Z","cvss":[{"version":"3.1","score":6.2,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T16:55:59.130573Z"}]}}