SQLite before 3.54.0 built with FTS3/FTS4 and SQLITE_ENABLE_FTS3_PARENTHESIS contains a use-after-free vulnerability in fts3BestSnippet() caused by dangling cached position-list pointers. Attackers can run a full-text MATCH query combining OR and NEAR operators with snippet() to read freed heap memory and crash the process.
Fix
Patch, vendor advisory and mitigation references on NVD 2
- https://sqlite.org/src/info/e4635c4153 patch
- https://github.com/sqlite/sqlite/commit/a87bd2471a9c0606e78d3c3678bcd9cecaa0e731 patch
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 6.8 · sqliteNVD modified 2026-10-30 11:30
Affected (CPE criteria) 0
NVD has not attached CPE configurations yet.
References 8
- https://sqlite.org/bugs/info/2026-08-17T09:18:24Z issue-tracking
- https://sqlite.org/src/info/e4635c4153 patch
- https://github.com/sqlite/sqlite/commit/a87bd2471a9c0606e78d3c3678bcd9cecaa0e731 patch
- https://github.com/sqlite/sqlite/blob/version-3.53.4/ext/fts3/fts3_snippet.c#L561 technical-description
- https://sqlite.org/releaselog/3_54_0.html release-notes
- https://abraxaslabs.tech/research/sqlite-fts3-snippet third-party-advisory
- https://github.com/sqlite/sqlite product
- https://www.vulncheck.com/advisories/sqlite-before-3.54.0-use-after-free-in-fts3-fts3bestsnippet-via-snippet third-party-advisory