SQLite before 3.54.0 built with the session extension contains a heap buffer overflow vulnerability in sqlite3changeset_apply() that allows attackers

Summary

SQLite before 3.54.0 built with the session extension contains a heap buffer overflow vulnerability in sqlite3changeset_apply() that allows attackers to corrupt heap memory by supplying crafted changesets. Attackers can repeat a table name in a second changeset block with a larger column count, causing sessionUpdateFind() to memset past the undersized aUpdateMask allocation.

Remediation

1. Inventory every Sqlite Sqlite deployment, including staging.
2. Upgrade Sqlite Sqlite to 3.54.0.
3. Confirm the running version after the upgrade.

References

• Patchhttps://github.com/sqlite/sqlite/commit/64459c87cc702d600704fb77ee40ca1782398a52
• Patchhttps://sqlite.org/bugs/info/2026-08-16T10:15:25Z
• Patchhttps://sqlite.org/src/info/3f57024aecea0f3b
• Advisoryhttps://abraxaslabs.tech/research/sqlite-session-ncol
• Advisoryhttps://www.vulncheck.com/advisories/sqlite-before-3.54.0-heap-buffer-overflow-via-session-extension-sessionupdatefind
• Referencehttps://github.com/sqlite/sqlite
• Referencehttps://github.com/sqlite/sqlite/blob/version-3.53.4/ext/session/sqlite3session.c#L5619
• Referencehttps://sqlite.org/releaselog/3_54_0.html