{"id":"CVE-2026-116733","aliases":["EUVD-2026-110481","GHSA-ffg2-pv59-mvp5"],"status":"published","title":"flatcc through 0.6.4 Out-of-Bounds Read via __flatcc_json_parser_number","description":"flatcc through 0.6.4 contains an out-of-bounds read vulnerability in __flatcc_json_parser_number that allows attackers to read past the input buffer via numbers ending in a decimal point. Attackers can supply untrusted JSON ending immediately after a decimal point to generated parsers, crashing applications when the buffer ends at an unmapped page.","severity":{"version":"4.0","score":6.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00421,"percentile":0.36897,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-125"],"published":"2026-10-26T21:52:34Z","modified":"2026-11-04T02:47:25Z","products":[{"vendor":"dvidelabs","product":"flatcc"}],"references":[{"url":"https://github.com/dvidelabs/flatcc/commit/356792dc155a9e685acdfe0ec1e209bdadcb4ab9","tags":["patch","fix"]},{"url":"https://github.com/dvidelabs/flatcc","tags":["product","package"]},{"url":"https://github.com/dvidelabs/flatcc/blob/v0.6.4/src/runtime/json_parser.c#L539-L543","tags":["technical-description","article"]},{"url":"https://hackmd.io/@haindpwn/flatcc-json-number-oob-read","tags":["third-party-advisory","advisory"]},{"url":"https://www.vulncheck.com/advisories/flatcc-through-0.6.4-out-of-bounds-read-via-flatcc-json-parser-number","tags":["third-party-advisory","advisory"]},{"url":"https://hackmd.io/@haindpwn/cve-2026-116733-116734-flatcc-json-number-oob-read","tags":["exploit","evidence"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-116733","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-ffg2-pv59-mvp5"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/116xxx/CVE-2026-116733.json","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-116733","title":"flatcc through 0.6.4 Out-of-Bounds Read via __flatcc_json_parser_number","description":"flatcc through 0.6.4 contains an out-of-bounds read vulnerability in __flatcc_json_parser_number that allows attackers to read past the input buffer via numbers ending in a decimal point. Attackers can supply untrusted JSON ending immediately after a decimal point to generated parsers, crashing applications when the buffer ends at an unmapped page.","status":"published","published":"2026-10-26T21:52:34.304Z","modified":"2026-11-02T18:26:35.453Z","cvss":[{"version":"4.0","score":6.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","level":"medium","assessor":"cna"},{"version":"3.1","score":3.7,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"low","assessor":"cna"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T19:47:06.831391Z"}],"euvd":[{"id":"EUVD-2026-110481","description":"flatcc through 0.6.4 contains an out-of-bounds read vulnerability in __flatcc_json_parser_number that allows attackers to read past the input buffer via numbers ending in a decimal point. Attackers can supply untrusted JSON ending immediately after a decimal point to generated parsers, crashing applications when the buffer ends at an unmapped page.","status":"published","published":"2026-10-26T21:52:34Z","modified":"2026-11-02T18:26:35Z","cvss":[{"version":"4.0","score":6.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","level":"medium"}],"updated_at":"2026-11-03T05:08:38.713005Z"}],"ghsa":[{"id":"GHSA-ffg2-pv59-mvp5","title":"flatcc through 0.6.4 contains an out-of-bounds read vulnerability in __flatcc_json_parser_number...","description":"flatcc through 0.6.4 contains an out-of-bounds read vulnerability in __flatcc_json_parser_number that allows attackers to read past the input buffer via numbers ending in a decimal point. Attackers can supply untrusted JSON ending immediately after a decimal point to generated parsers, crashing applications when the buffer ends at an unmapped page.","status":"published","published":"2026-10-27T00:32:47Z","modified":"2026-11-02T21:31:38Z","cvss":[{"version":"4.0","score":6.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/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":3.7,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"low"}],"cwes":["CWE-125"],"updated_at":"2026-11-03T00:02:47.574481Z"}],"nvd":[{"id":"CVE-2026-116733","description":"flatcc through 0.6.4 contains an out-of-bounds read vulnerability in __flatcc_json_parser_number that allows attackers to read past the input buffer via numbers ending in a decimal point. Attackers can supply untrusted JSON ending immediately after a decimal point to generated parsers, crashing applications when the buffer ends at an unmapped page.","status":"published","published":"2026-10-26T22:16:57.36Z","modified":"2026-11-02T19:17:57.503Z","cvss":[{"version":"4.0","score":6.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/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":3.7,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"low","assessor":"secondary"}],"cwes":["CWE-125"],"updated_at":"2026-11-03T00:02:36.126212Z"}],"osv":[{"id":"CVE-2026-116733","title":"flatcc through 0.6.4 Out-of-Bounds Read via __flatcc_json_parser_number","description":"flatcc through 0.6.4 contains an out-of-bounds read vulnerability in __flatcc_json_parser_number that allows attackers to read past the input buffer via numbers ending in a decimal point. Attackers can supply untrusted JSON ending immediately after a decimal point to generated parsers, crashing applications when the buffer ends at an unmapped page.","status":"published","published":"2026-10-26T21:52:34.304Z","modified":"2026-11-04T07:04:29.95043861Z","cvss":[{"version":"4.0","score":6.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","level":"medium"}],"cwes":["CWE-125"],"updated_at":"2026-11-04T07:32:23.735279Z"}]}}