Vulnerability 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.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://abraxaslabs.tech/research/sqlite-fts5-rowidmerge
- https://github.com/sqlite/sqlite
- https://github.com/sqlite/sqlite/blob/version-3.53.4/ext/fts5/fts5_index.c#L6107
- https://github.com/sqlite/sqlite/commit/e1c9934f9f11a499029abb020ea715a08970da80
- https://sqlite.org/bugs/info/2026-08-04T08:49:27Z
- https://sqlite.org/releaselog/3_54_0.html
- https://sqlite.org/src/info/a7f8c92f62
- https://www.vulncheck.com/advisories/sqlite-before-3.54.0-fts5-heap-buffer-overf
FAQ
What is CVE-2026-119373?
CVE-2026-119373 is a vulnerability with a CVSS score of 7.8 (HIGH). 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 d...
How severe is CVE-2026-119373?
CVE-2026-119373 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-119373?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.