CVE-2026-11824

A flaw was found in SQLite, specifically within its FTS5 full-text search extension. Attackers can exploit a heap-based buffer overflow by providing a specially crafted database. This crafted database contains malicious metadata that triggers an integer underflow during FTS5 MATCH query processing. Successful exploitation of this vulnerability can lead to a crash of the application or allow for arbitrary code execution.

This Important vulnerability in SQLite's FTS5 full-text search extension can lead to arbitrary code execution or application crashes due to a heap-based buffer overflow. Exploitation requires an attacker to provide a specially crafted SQLite database, which must then be processed by an application compiled with FTS5 support. While requiring user interaction and local access, the potential for full impact on system resources justifies the Important severity.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.