Buffer overflow in Sqlite
CVE-2026-11822
SQLite before 3.53.2 contains memory corruption vulnerabilities in the FTS5 full-text search extension that allow attackers to cause process crashes, memory exhaustion, or arbitrary code execution by supplying a crafted database with malformed FTS5 page data. Attackers can trigger an out-of-bounds read in fts5LeafSeek() via an attacker-controlled loop bound and a heap buffer overflow write in fts5ChunkIterate() through a crafted continuation page causing an integer underflow, exploitable when an FTS5 MATCH query is executed against the malicious database.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.003 (19.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 20th percentile — 19.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.001
Affected products
- Sqlite — versions 0
Weakness classification (CWE)
References
- sqlite.org/releaselog/3_53_2.html (release-notes, Release Notes)
- sqlite.org/src/info/061febcf41ca (Patch, patch, Issue Tracking)
- sqlite.org/src/info/4a5ad516ea93 (Patch, patch, Issue Tracking)
- www.vulncheck.com/advisories/sqlite-before-memory-corruption-in-fts5-extension (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2026-11822?
- CVE-2026-11822 is a high-severity vulnerability in Sqlite, classified under Heap-based Buffer Overflow. CVSS score: 7.8/10. Published 2026-06-09.
- How severe is CVE-2026-11822?
- High severity. CVSS v3 base score is 7.8 out of 10.