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SQLiteDatabase / datastore

CVE-2026-11824

HIGH · 7.8 CVSS v3.1 Published 2026-06-09
Fix available
A fix is available. Upgrade to 3.53.2 or later.
See remediation →
81/100
Remediation priority · High
No privileges Patch available

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
SQLite before 3.53.2 contains a heap-based buffer overflow vulnerability in the FTS5 full-text search extension that allows attackers to cause a crash or execute arbitrary code by supplying a crafted database with malicious continuation page metadata specifying a szLeaf value smaller than 4. Attackers can trigger an integer underflow in fts5ChunkIterate() causing an inflated remaining byte count during FTS5 MATCH query processing, leading to a heap buffer overflow of attacker-controlled data in applications compiled with SQLITE_ENABLE_FTS5.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis
How this class of weakness works · CWE-122

Data overflows a buffer allocated on the heap, corrupting neighbouring heap structures and allocator metadata that a patient attacker can groom into control of execution. It is subtler than a stack overflow but just as dangerous. The fix is validating lengths before every write and using safe allocators and bounded operations.

General guidance for the heap-based buffer overflow class — the official description and references above are authoritative for this specific CVE. Want a bespoke review and a reviewed fix? Ask our team →

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
SQLiteDatabase / datastore
Affected:< 3.53.2

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Upgrade available Upgrade to 3.53.2 or later
Fixed in 3.53.2
Vendor patch sqlite.org →
Recommended fix High confidence

SQLite 3.53.2

  1. 1. Identify all applications or systems using SQLite with FTS5 enabled (SQLITE_ENABLE_FTS5 compilation flag)
  2. 2. Check current SQLite version by running `sqlite3 --version` or querying `SELECT sqlite_version();`
  3. 3. Download SQLite version 3.53.2 or later from the official SQLite download page: https://www.sqlite.org/download.html
  4. 4. Compile the new SQLite version ensuring FTS5 is enabled (or match the original build configuration)
  5. 5. Replace the existing SQLite library/binary with the new version
  6. 6. Rebuild any applications that link against the SQLite library if using a custom build
  7. 7. Test FTS5 functionality to verify the upgrade was successful
  8. 8. Verify the new version is active by running `SELECT sqlite_version();`
Caveat SQLite minor version upgrades are typically backward compatible; no major breaking changes expected for this release

Generated from the published advisory — verify against the referenced sources before acting.

We can perform the upgrade in your staging environment and verify nothing breaks — typical engagement from $1,950. Get the upgrade done

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2026-11824 in production — separate from our analysis above.

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What this is

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  • Version or environment caveats, and links to real fixes
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