---
id: CVE-2026-11824
title: >-
  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 …
summary: >-
  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 …
severity: high
cvss: 7.8
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'
cwe:
  - CWE-122
vendor: sqlite
product: sqlite
affected:
  - sqlite < 3.53.2
patched:
  - sqlite 3.53.2
published: '2026-06-09'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T02:18:37.653'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-11824'
references:
  - url: 'https://sqlite.org/releaselog/3_53_2.html'
    label: disclosure@vulncheck.com
  - url: 'https://sqlite.org/src/info/061febcf41ca'
    label: disclosure@vulncheck.com
  - url: 'https://sqlite.org/src/info/4a5ad516ea93'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/sqlite-before-heap-buffer-overflow-via-fts5-fts5chunkiterate
    label: disclosure@vulncheck.com
  - url: 'https://cert-portal.siemens.com/productcert/html/ssa-765416.html'
    label: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
tags:
  - nvd
  - cve.org
epss: 0.00176
epssPercentile: 0.06648
ingestedAt: '2026-10-15T03:30:12.900Z'
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-06-09T19:41:10.263986Z'
---

## Overview

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.

## Affected

- `sqlite < 3.53.2`

## Remediation

Upgrade past the affected range:

- `sqlite 3.53.2`