CVE-2026-120058: high-severity vulnerability in PostgreSQL psqlODBC
psqlODBC row cache overflow when a later FETCH changes the column count
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.5epss 0.3%
psqlODBC sizes its row cache from the column count of a cursor's first result, but recomputes the column count from each later FETCH reply without checking that it matches. A server not trusted under current SSL settings can answer a later FETCH with more columns and make the driver write tuple records past the end of the heap allocation. A keyset reply with fewer columns than the key fields also underflows the unsigned field count. This is reachable with UseDeclareFetch enabled. Versions before psqlODBC 18.00.0006 are affected.
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/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-2026-120067MEDIUMpsqlODBC stack buffer overflow copying ctid and oid values for updatable cursorsEPSS 0.3%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%