{"id":"CVE-2026-88358","title":"simdjson 4.6.1 contains a one-byte out-of-bounds read vulnerability in dom::parser::parse_unpadded()","summary":"simdjson 4.6.1 contains a one-byte out-of-bounds read vulnerability in dom::parser::parse_unpadded(). A specially crafted truncated JSON document whose final structural token closes a nested array or object can cause json_iterator::walk_…","severity":"medium","cvss":6.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","cwe":["CWE-125"],"published":"2026-09-24","updated":"2026-09-29","sourceUpdated":"2026-09-29T03:17:19.610","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-88358","references":[{"url":"https://github.com/simdjson/simdjson/commit/20b28712ffce8320237b75a587d35a2e89140577","label":"cve@mitre.org"},{"url":"https://github.com/simdjson/simdjson/issues/2815","label":"cve@mitre.org"},{"url":"https://github.com/simdjson/simdjson/pull/2817","label":"cve@mitre.org"},{"url":"https://github.com/simdjson/simdjson/issues/2815","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"tags":["nvd","cve.org","exploit-available"],"exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"no","technicalImpact":"partial","timestamp":"2026-09-29T02:25:09.093346Z"},"ingestedAt":"2026-09-24T15:45:56.660Z","epss":0.00394,"epssPercentile":0.33426,"slug":"CVE-2026-88358","body":"## Overview\n\nsimdjson 4.6.1 contains a one-byte out-of-bounds read vulnerability in dom::parser::parse_unpadded(). A specially crafted truncated JSON document whose final structural token closes a nested array or object can cause json_iterator::walk_document() to access buf[len] after the input buffer has been exhausted. This results in a heap out-of-bounds read and may cause application termination, leading to denial of service.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":48,"depthScoreParts":{"impact":35.8,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[{"seq":212218,"id":"CVE-2026-88358","ts":1790652421906,"field":"exploit_available","old":"false","new":"true"},{"seq":212217,"id":"CVE-2026-88358","ts":1790652421906,"field":"cvss","old":null,"new":"6.5"},{"seq":212216,"id":"CVE-2026-88358","ts":1790652421906,"field":"severity","old":"none","new":"medium"}]}