PostgreSQL psqlODBC up to 18.00.5 stack-based overflow

Summaryinfo

A vulnerability classified as problematic was found in PostgreSQL psqlODBC up to 18.00.5. Affected by this vulnerability is an unknown functionality. Such manipulation leads to stack-based overflow. This vulnerability is listed as CVE-2026-120063. The attack may be performed from remote. There is no available exploit. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in PostgreSQL psqlODBC up to 18.00.5. Affected by this issue is an unknown function. The manipulation with an unknown input leads to a stack-based overflow vulnerability. Using CWE to declare the problem leads to CWE-121. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). Impacted is integrity, and availability. CVE summarizes:

When psqlODBC quotes a schema or table name into a 128-byte stack buffer, its length check lets it write up to two bytes past the end of the buffer for a long name. The names come from the application's SQL text: the table of a statement the driver parses to describe its columns, and the target of the last INSERT when the driver rewrites SELECT @@IDENTITY. In the @@IDENTITY rewrite, a column name sent by the server can also write one byte past the buffer. The bytes written past the buffer are a double quote and a NUL. An application that forwards untrusted SQL text to the driver exposes its process to stack corruption. Versions before psqlODBC 18.00.0006 are affected.

The advisory is shared for download at github.com. This vulnerability is handled as CVE-2026-120063 since 10/30/2026. The exploitation is known to be easy. The attack may be launched remotely. There are neither technical details nor an exploit publicly available.

Upgrading to version 18.00.0006 eliminates this vulnerability.

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Productinfo

Type

• Database Software

Vendor

• PostgreSQL

Name

• psqlODBC

Version

• 18.00.0
• 18.00.1
• 18.00.2
• 18.00.3
• 18.00.4
• 18.00.5

License

• open-source

CPE 2.3info

• 🔒
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CPE 2.2info

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