{"document":{"category":"csaf_vex","csaf_version":"2.0","title":"CVE-2026-11824: SQLite before 3.53.2 Heap Buffer Overflow via FTS5 fts5ChunkIterate","publisher":{"category":"vendor","name":"HarborGuard Database","namespace":"https://database.harborguard.co"},"tracking":{"id":"CVE-2026-11824","status":"final","version":"1","initial_release_date":"2026-06-09T19:21:42.603Z","current_release_date":"2026-06-09T19:41:18.725Z","revision_history":[{"date":"2026-06-09T19:21:42.603Z","number":"1","summary":"Initial machine-readable export from HarborGuard."}]},"distribution":{"tlp":{"label":"WHITE"},"text":"Public CVE data; freely redistributable."},"notes":[{"category":"description","text":"SQLite before 3.53.2 contains a heap-based buffer overflow vulnerability in the FTS5 full-text search extension that allows attackers to cause a crash or execute arbitrary code by supplying a crafted database with malicious continuation page metadata specifying a szLeaf value smaller than 4. Attackers can trigger an integer underflow in fts5ChunkIterate() causing an inflated remaining byte count during FTS5 MATCH query processing, leading to a heap buffer overflow of attacker-controlled data in applications compiled with SQLITE_ENABLE_FTS5.","title":"CVE description"}],"references":[{"category":"self","summary":"CVE-2026-11824 on HarborGuard Database","url":"https://database.harborguard.co/cve/CVE-2026-11824"},{"category":"external","summary":"CVE Record","url":"https://www.cve.org/CVERecord?id=CVE-2026-11824"},{"category":"external","summary":"sqlite.org","url":"https://sqlite.org/src/info/061febcf41ca"},{"category":"external","summary":"sqlite.org","url":"https://sqlite.org/src/info/4a5ad516ea93"},{"category":"external","summary":"sqlite.org","url":"https://sqlite.org/releaselog/3_53_2.html"},{"category":"external","summary":"vulncheck.com","url":"https://www.vulncheck.com/advisories/sqlite-before-heap-buffer-overflow-via-fts5-fts5chunkiterate"}]},"product_tree":{"branches":[{"category":"vendor","name":"SQLite","branches":[{"category":"product_name","name":"SQLite","branches":[{"category":"product_version_range","name":"<3.53.2","product":{"name":"SQLite SQLite <3.53.2","product_id":"CSAFPID-1","product_identification_helper":{"cpe":"cpe:2.3:a:sqlite:sqlite:*:*:*:*:*:*:*:*"}}}]}]}]},"vulnerabilities":[{"cve":"CVE-2026-11824","title":"SQLite before 3.53.2 Heap Buffer Overflow via FTS5 fts5ChunkIterate","notes":[{"category":"description","text":"SQLite before 3.53.2 contains a heap-based buffer overflow vulnerability in the FTS5 full-text search extension that allows attackers to cause a crash or execute arbitrary code by supplying a crafted database with malicious continuation page metadata specifying a szLeaf value smaller than 4. Attackers can trigger an integer underflow in fts5ChunkIterate() causing an inflated remaining byte count during FTS5 MATCH query processing, leading to a heap buffer overflow of attacker-controlled data in applications compiled with SQLITE_ENABLE_FTS5.","title":"CVE description"}],"product_status":{"known_affected":["CSAFPID-1"]},"scores":[{"cvss_v4":{"version":"4.0","vectorString":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","baseScore":8.5,"baseSeverity":"HIGH"},"products":["CSAFPID-1"]}],"remediations":[{"category":"vendor_fix","details":"Update to a fixed version: 3.53.2.","product_ids":["CSAFPID-1"],"url":"https://sqlite.org/src/info/061febcf41ca"}]}]}