Security advisory for SQLite

Advisory overview

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.

Related references

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