CVE-2026-119373
HIGH severity · CVSS 7.8 · Out-of-bounds write
7.8CVSS HIGH
Summary
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.
Impact & exploitability
Attack vectorLocal
Attack complexityLow
Privileges requiredNone
User interactionRequired
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
Exploit probability (EPSS)0%
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Affected products we track (1)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Official patch: https://github.com/sqlite/sqlite/blob/version-3.53.4/ext/fts5/fts5_index.c#L6107 ↗
Additional information
- NVD record
- https://github.com/sqlite/sqlite/blob/version-3.53.4/ext/fts5/fts5_index.c#L6107Patch
- https://github.com/sqlite/sqlite/commit/e1c9934f9f11a499029abb020ea715a08970da80Patch
- https://sqlite.org/bugs/info/2026-08-04T08:49:27ZPatch
- https://sqlite.org/src/info/a7f8c92f62Patch
- https://github.com/sqlite/sqlite
- https://sqlite.org/releaselog/3_54_0.html
- https://www.vulncheck.com/advisories/sqlite-before-3.54.0-fts5-heap-buffer-overflow-via-fts5mergerowidlistsAdvisory
- https://abraxaslabs.tech/research/sqlite-fts5-rowidmergeAdvisory