psqlODBC stack buffer overflow when quoting long schema and table names

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-120063
StatePUBLISHED
AssignerPostgreSQL
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-11-02 19:18:03 UTC
Updated2026-11-02 20:17:39 UTC
DescriptionWhen 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.

Risk And Classification

Primary CVSS: v3.1 5.9 MEDIUM from f86ef6dc-4d3a-42ad-8f28-e6d5547a5007

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:H

Problem Types: CWE-121 | CWE-787 | CWE-121 CWE-121 Stack-based Buffer Overflow | CWE-787 CWE-787 Out-of-bounds Write

VersionSourceTypeScoreSeverityVector
3.1f86ef6dc-4d3a-42ad-8f28-e6d5547a5007Secondary5.9MEDIUMCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:H
3.1CNACVSS5.9MEDIUMCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
High

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA PostgreSQL PsqlODBC affected 18.00.0006 custom Not specified

References

ReferenceSourceLinkTags
github.com/postgresql-interfaces/psqlodbc/security/advisories/GHSA-285r-... f86ef6dc-4d3a-42ad-8f28-e6d5547a5007 github.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Additional Advisory Data

Solutions

CNA: Upgrade to psqlODBC 18.00.0006 or later. identifierEscape bounds every write to the output buffer, including the closing quote and the terminator.

Workarounds

CNA: Do not pass SQL text from untrusted sources to the driver.

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