Vulnerability · Published Oct 30, 2026 · Assigned by VulnCheck
CVE-2026-119373SQLite before 3.54.0 FTS5 Heap Buffer Overflow via fts5MergeRowidLists()
High 7.8
In plain English
A high-severity out-of-bounds write in SQLite from SQLite. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 5% of all known vulnerabilities).
Severity (CVSS 3.1)7.8High
Exploit odds (30 days)0.2%top 94.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | sqlite3 | no fix listed | DEBIAN-CVE-2026-119373 |
| Debian:13 | sqlite3 | no fix listed | DEBIAN-CVE-2026-119373 |
| Debian:14 | sqlite3 | no fix listed | DEBIAN-CVE-2026-119373 |
| Ubuntu:22.04:LTS | sqlite | no fix listed | UBUNTU-CVE-2026-119373 |
| Ubuntu:22.04:LTS | sqlite3 | no fix listed | UBUNTU-CVE-2026-119373 |
| Ubuntu:24.04:LTS | sqlite3 | no fix listed | UBUNTU-CVE-2026-119373 |
| Ubuntu:26.04:LTS | sqlite3 | no fix listed | UBUNTU-CVE-2026-119373 |
| Ubuntu:26.10 | sqlite3 | no fix listed | UBUNTU-CVE-2026-119373 |
Affected products (as reported)
Weakness: CWE-787 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
References
- https://sqlite.org/bugs/info/2026-08-04T08:49:27Z issue-tracking
- https://sqlite.org/src/info/a7f8c92f62 patch
- https://github.com/sqlite/sqlite/commit/e1c9934f9f11a499029abb020ea715a08970da80 patch
- https://github.com/sqlite/sqlite/blob/version-3.53.4/ext/fts5/fts5_index.c#L6107 technical-description
- https://sqlite.org/releaselog/3_54_0.html release-notes
- https://abraxaslabs.tech/research/sqlite-fts5-rowidmerge third-party-advisory
- https://github.com/sqlite/sqlite product
- VulnCheck Advisory: SQLite before 3.54.0 FTS5 Heap Buffer Overflow via fts5MergeRowidLists() third-party-advisory