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CVE-2026-11824— SQLite before 3.53.2 Heap Buffer Overflow via FTS5 fts5ChunkIterate

Quick assessment

Affected
SQLite SQLite
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

SQLite是SQLite开源的一款轻型的数据库，是遵守ACID的关系型数据库管理系统。 SQLite 3.53.2之前版本存在安全漏洞，该漏洞源于FTS5全文搜索扩展中的堆缓冲区溢出问题，可能导致攻击者通过提供带有恶意延续页面元数据的特制数据库造成崩溃或执行任意代码。以下版本受到影响：3.53.2之前版本。

CVSS 7.8 · High EPSS 0.18% · P6

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
SQLite SQLite < 3.53.2 affected
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I. Basic Information for CVE-2026-11824

Vulnerability Information
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Vulnerability Title
SQLite before 3.53.2 Heap Buffer Overflow via FTS5 fts5ChunkIterate
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
堆缓冲区溢出
Source: CVE Program / CVE List V5
Vulnerability Title
SQLite 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
SQLite是SQLite开源的一款轻型的数据库，是遵守ACID的关系型数据库管理系统。 SQLite 3.53.2之前版本存在安全漏洞，该漏洞源于FTS5全文搜索扩展中的堆缓冲区溢出问题，可能导致攻击者通过提供带有恶意延续页面元数据的特制数据库造成崩溃或执行任意代码。以下版本受到影响：3.53.2之前版本。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
SQLite SQLite 0 ~ 3.53.2 -

II. Public POCs for CVE-2026-11824

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III. Intelligence Information for CVE-2026-11824

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Patches & Fixes for CVE-2026-11824 (2)

Vendor Advisories for CVE-2026-11824 (1)

News Coverage for CVE-2026-11824 (1)

IV. Related Vulnerabilities

Same product: SQLite
Same vendor: SQLite
Same weakness: CWE-122

V. Comments for CVE-2026-11824

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