CVE-2026-11824
SQLite before 3.53.2 Heap Buffer Overflow via FTS5 fts5ChunkIterate
- State
- Published
- Severity
- 8.5 High
- Published
- Jun 9, 2026
- Updated
- Oct 15, 2026
- Reserved
- Jun 9, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.5 High | 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 | VulnCheck |
| 3.1 | 7.8 High | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H | VulnCheck |
Weaknesses
- CWE-122 Heap-based Buffer Overflow
Affected Products
| Product | Versions |
|---|---|
SQLiteSQLite |
|
References
- https://sqlite.org/src/info/061febcf41capatch
- https://sqlite.org/src/info/4a5ad516ea93patch
- https://sqlite.org/releaselog/3_53_2.htmlrelease-notes
- https://www.vulncheck.com/advisories/sqlite-before-heap-buffer-overflow-via-fts5-fts5chunkiteratethird-party-advisory
- https://cert-portal.siemens.com/productcert/html/ssa-765416.html
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