---
id: "CVE-2026-119373"
kind: "vulnerability"
aliases: ["CVE-2026-119373"]
title: "SQLite: FTS5 heap overflow lets a crafted table crash the process"
severity: "high"
cvss: 8.5
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["embedded-database", "fts5", "node", "package", "python", "sqlite"]
not_affected_if: ["detail-none-not-used", "fts5-not-compiled", "no-untrusted-input"]
published_at: "2026-10-30T12:16:36+00:00"
first_seen_at: "2026-10-30T12:30:23+00:00"
updated_at: "2026-10-30T12:32:06+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-119373", "first_seen_at": "2026-10-30T12:30:23+00:00"}]
---

# SQLite: FTS5 heap overflow lets a crafted table crash the process

SQLite builds with FTS5 before 3.54.0 contain a heap buffer overflow in fts5MergeRowidLists() when merging prefix doclists on detail=none tables. An attacker who can insert rows with negative rowids and run a prefix MATCH query can corrupt heap memory and crash the process.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Run `sqlite3 --version` or check the bundled SQLite version in your application (`select sqlite_version();`) and see whether it is below `3.54.0`.
- Search your schema for FTS5 tables created with `detail=none` (`grep -i "fts5" schema.sql` and look for `detail=none`).

## Fix

- SQLite: upgrade to `3.54.0` or later.

## Timeline

- 2026-10-30T12:30:23+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-119373

## From the sources

SQLite before 3.54.0 built with FTS5 contains a heap buffer overflow in fts5MergeRowidLists() that undersizes the output buffer when merging detail=none prefix doclists. Attackers who can populate a detail=none FTS5 table with negative rowids and run a prefix MATCH query can write past the allocation, corrupting heap memory and crashing the process.

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