CVE-2026-120067: medium-severity vulnerability in PostgreSQL psqlODBC
psqlODBC stack buffer overflow copying ctid and oid values for updatable cursors
Published
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13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 5.9epss 0.3%
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.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products
PostgreSQL · psqlODBCRelated CVEs — PostgreSQL psqlODBC
In the same product, most dangerous first.
CVE-2026-120062HIGHpsqlODBC SQL injection through SQLSpecialColumns table and schema namesEPSS 0.4%CVE-2026-120064HIGHpsqlODBC does not validate column numbers and row indexes in binding and descriptor functionsEPSS 0.3%CVE-2026-120061HIGHpsqlODBC ODBC escape parser stack buffer overflowEPSS 0.3%CVE-2026-120065HIGHpsqlODBC does not escape a server-supplied column name in its updatable-cursor queriesEPSS 0.3%CVE-2026-120063MEDIUMpsqlODBC stack buffer overflow when quoting long schema and table namesEPSS 0.3%CVE-2026-120059MEDIUMpsqlODBC uses a server-supplied column name as a format stringEPSS 0.3%