Live › vulnerability › CVE-2026-120067
psqlODBC is the PostgreSQL ODBC driver. A malicious or untrusted database server, or a database user who can create a view with a column named ctid, can send an oversized value that overflows a 32-byte stack buffer in the driver.
Summary written from the sources below. Check the originals before acting.
First seen by InfraStack 2026-11-02 19:24 UTC. All times on this page are UTC.
Applications that use the psqlODBC driver with updatable cursors, which are on by default, and that connect to database servers not fully trusted under current SSL settings, or that read views created by users who can add a column named ctid. Systems using only trusted servers with no untrusted database users may face lower exposure, but the sources do not say how much lower.
No product ranges from the sources yet.
18.00.000618.00.0006 or laterEach row is the first time that source carried this signal. The analyst’s rows are its own findings.
For updatable cursors, which are enabled by default, psqlODBC adds hidden ctid and, for tables with OIDs, oid columns to the query. It copies each value into a 32-byte stack buffer using the length the server sent, without checking it against the buffer size, so a value of 32 bytes or more writes past the buffer. A server not trusted under current SSL settings can send such a value. So can any database user who can create a view with its own column named ctid that the application reads with an updatable cursor. Builds with _FORTIFY_SOURCE abort; other builds overwrite adjacent stack memory. Versions before psqlODBC 18.00.0006 are affected.
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