{"id":"CVE-2026-62349","summary":"TDengine: Off-by-One Buffer Overflow","details":"TDengine is an open source, time-series database optimized for Internet of Things devices. In 3.4.1.6 and earlier, source/libs/parser/src/parUtil.c trimString() checks space for only one byte before processing SQL string escape sequences \\%, \\_, or \\x, allowing a one-byte out-of-bounds write to the stack buffer tmpTokenBuf that can cause denial of service and potentially remote code execution. This issue is fixed in version 3.4.1.14.","aliases":["GHSA-4v5h-fxjw-vrmq"],"modified":"2026-10-26T02:30:22.743614781Z","published":"2026-07-15T18:55:07.774Z","database_specific":{"cwe_ids":["CWE-121","CWE-787"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/62xxx/CVE-2026-62349.json","unresolved_ranges":[{"extracted_events":[{"range":[{"fixed":"3.4.1.14"}],"source":"AFFECTED_FIELD","strategy":"StringRangeExpression"}]},{"extracted_events":[{"range":[{"fixed":"3.4.1.14"}],"source":"DESCRIPTION"}]}],"cna_assigner":"GitHub_M"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/62xxx/CVE-2026-62349.json"},{"type":"ADVISORY","url":"https://github.com/taosdata/TDengine/security/advisories/GHSA-4v5h-fxjw-vrmq"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-62349"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/taosdata/tdengine","events":[{"introduced":"0"},{"last_affected":"003e8a5f102f6ee24ada79e087bdbbea1442ca88"}],"database_specific":{"extracted_events":[{"range":[{"introduced":"0"},{"last_affected":"3.4.1.6"}],"source":"DESCRIPTION"}]}}],"versions":["ver-3.4.1.6","ver-3.3.5.5","autoaddcol_07161108","release/ver-2.1.2.0","ver-2.1.0","ver-2.0.8.2","ver-2.0.2.2-beta","ver-2.0.2.0","ver-2.0.0.4","ver-2.0.0.3","ver-2.0.0.2","ver-1.6.5.3.aidong-beta","ver-1.6.5.3-beta","ver-1.6.5.2-beta","ver-1.6.5.1-beta","ver-1.6.5.0-beta","ver-1.6.3.1","ver-1.6.3.0","ver-1.6.2.2","ver-1.6.2.1","ver-1.6.2.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-62349.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H"}]}