{"id":"CVE-2026-120458","aliases":["EUVD-2026-115218","GHSA-chw9-qpvj-3r3m","UBUNTU-CVE-2026-120458"],"status":"published","title":"Kvazaar through 2.3.2 Infinite Loop DoS via Y4M Header Parser","description":"Kvazaar through 2.3.2 contains an infinite loop vulnerability in read_header() in src/encmain.c that allows attackers to hang the command-line encoder by supplying a truncated Y4M header. Attackers can provide a crafted .y4m file lacking a terminating newline, causing unchecked EOF reads that hang the process indefinitely while consuming a full CPU core.","severity":{"version":"4.0","score":6.8,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00165,"percentile":0.05828,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-835"],"published":"2026-11-02T14:29:15Z","modified":"2026-11-07T10:47:28Z","affected":[{"source":"osv","ecosystem":"Ubuntu:26.10","package":"kvazaar","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.3.2-1"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"kvazaar","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.3.1-3","2.3.2-1"]}],"products":[{"vendor":"ultra video group","product":"kvazaar"}],"references":[{"url":"https://github.com/ultravideo/kvazaar/issues/452","tags":["issue-tracking","report"]},{"url":"https://github.com/ultravideo/kvazaar/commit/8a2f109be283e87008c679d635966cc034da39c6","tags":["patch","fix","report"]},{"url":"https://github.com/ultravideo/kvazaar/blob/v2.3.2/src/encmain.c#L339-L357","tags":["technical-description","article","report"]},{"url":"https://github.com/ultravideo/kvazaar/releases/tag/v2.3.2","tags":["release-notes","advisory","report"]},{"url":"https://hackmd.io/@haindpwn/kvazaar-y4m-header-missing-newline-infinite-loop","tags":["technical-description","article","report"]},{"url":"https://www.vulncheck.com/advisories/kvazaar-through-2.3.2-infinite-loop-dos-via-y4m-header-parser","tags":["third-party-advisory","advisory","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-120458","tags":["advisory"]},{"url":"https://hackmd.io/@haindpwn/cve-2026-120458-kvazaar-y4m-header-missing-newline-infinite-loop","tags":["evidence"]},{"url":"https://github.com/advisories/GHSA-chw9-qpvj-3r3m"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/120xxx/CVE-2026-120458.json","tags":["advisory"]},{"url":"https://github.com/ultravideo/kvazaar","tags":["package"]},{"url":"https://ubuntu.com/security/CVE-2026-120458","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-120458","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-120458","title":"Kvazaar through 2.3.2 Infinite Loop DoS via Y4M Header Parser","description":"Kvazaar through 2.3.2 contains an infinite loop vulnerability in read_header() in src/encmain.c that allows attackers to hang the command-line encoder by supplying a truncated Y4M header. Attackers can provide a crafted .y4m file lacking a terminating newline, causing unchecked EOF reads that hang the process indefinitely while consuming a full CPU core.","status":"published","published":"2026-11-02T14:29:15.073Z","modified":"2026-11-02T14:29:15.073Z","cvss":[{"version":"4.0","score":6.8,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"medium","assessor":"cna"},{"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-835"],"updated_at":"2026-11-02T18:00:08.034842Z"}],"euvd":[{"id":"EUVD-2026-115218","description":"Kvazaar through 2.3.2 contains an infinite loop vulnerability in read_header() in src/encmain.c that allows attackers to hang the command-line encoder by supplying a truncated Y4M header. Attackers can provide a crafted .y4m file lacking a terminating newline, causing unchecked EOF reads that hang the process indefinitely while consuming a full CPU core.","status":"published","published":"2026-11-02T14:29:15Z","modified":"2026-11-07T00:19:55Z","cvss":[{"version":"4.0","score":6.8,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"medium"}],"updated_at":"2026-11-07T01:07:57.939807Z"}],"ghsa":[{"id":"GHSA-chw9-qpvj-3r3m","title":"Kvazaar through 2.3.2 contains an infinite loop vulnerability in read_header() in src/encmain.c...","description":"Kvazaar through 2.3.2 contains an infinite loop vulnerability in read_header() in src/encmain.c that allows attackers to hang the command-line encoder by supplying a truncated Y4M header. Attackers can provide a crafted .y4m file lacking a terminating newline, causing unchecked EOF reads that hang the process indefinitely while consuming a full CPU core.","status":"published","published":"2026-11-02T15:31:45Z","modified":"2026-11-07T03:32:12Z","cvss":[{"version":"4.0","score":6.8,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","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"}],"cwes":["CWE-835"],"updated_at":"2026-11-07T03:35:32.541373Z"}],"nvd":[{"id":"CVE-2026-120458","description":"Kvazaar through 2.3.2 contains an infinite loop vulnerability in read_header() in src/encmain.c that allows attackers to hang the command-line encoder by supplying a truncated Y4M header. Attackers can provide a crafted .y4m file lacking a terminating newline, causing unchecked EOF reads that hang the process indefinitely while consuming a full CPU core.","status":"published","published":"2026-11-02T15:17:29.697Z","modified":"2026-11-07T01:17:02.013Z","cvss":[{"version":"4.0","score":6.8,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium","assessor":"secondary"},{"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-835"],"updated_at":"2026-11-07T07:04:25.274835Z"}],"osv":[{"id":"CVE-2026-120458","title":"Kvazaar through 2.3.2 Infinite Loop DoS via Y4M Header Parser","description":"Kvazaar through 2.3.2 contains an infinite loop vulnerability in read_header() in src/encmain.c that allows attackers to hang the command-line encoder by supplying a truncated Y4M header. Attackers can provide a crafted .y4m file lacking a terminating newline, causing unchecked EOF reads that hang the process indefinitely while consuming a full CPU core.","status":"published","published":"2026-11-02T14:29:15.073Z","modified":"2026-11-08T02:30:18.573906482Z","cvss":[{"version":"4.0","score":6.8,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"medium"}],"cwes":["CWE-835"],"updated_at":"2026-11-07T11:15:38.581573Z"},{"id":"UBUNTU-CVE-2026-120458","description":"Kvazaar through 2.3.2 contains an infinite loop vulnerability in read_header() in src/encmain.c that allows attackers to hang the command-line encoder by supplying a truncated Y4M header. Attackers can provide a crafted .y4m file lacking a terminating newline, causing unchecked EOF reads that hang the process indefinitely while consuming a full CPU core.","status":"published","published":"2026-11-02T15:17:00Z","modified":"2026-11-05T04:42:52Z","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":"4.0","score":6.8,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"medium"}],"updated_at":"2026-11-05T13:33:25.727744Z"}]}}