psqlODBC uses a server-supplied column name as a format string

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-120059
StatePUBLISHED
AssignerPostgreSQL
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-11-02 19:18:02 UTC
Updated2026-11-02 20:17:39 UTC
DescriptionFor an updatable cursor over a table without OIDs that has an auto-increment int4 column, psqlODBC places that column's name, as reported by the server, into a printf-style format string. It later expands that string with one argument while it builds the WHERE clause of its positioned SELECT, UPDATE, and DELETE statements. A column name that contains format directives makes the driver read unrelated memory, which can crash the application or copy client memory into query text sent to the server. The name can come from a server not trusted under current SSL settings, or from any database user who can create a table that the application reads with an updatable cursor. Versions before psqlODBC 18.00.0006 are affected.

Risk And Classification

Primary CVSS: v3.1 6.8 MEDIUM from f86ef6dc-4d3a-42ad-8f28-e6d5547a5007

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

Problem Types: CWE-134 | CWE-134 CWE-134 Use of Externally-Controlled Format String

VersionSourceTypeScoreSeverityVector
3.1f86ef6dc-4d3a-42ad-8f28-e6d5547a5007Secondary6.8MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:H
3.1CNACVSS6.8MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:H

CVSS v3.1 Breakdown

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

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/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-44rq-... 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. Each percent sign in the server-supplied column name is doubled before the name is placed in the format string.

Workarounds

CNA: Set UpdatableCursors=0 in the connection string or DSN, or use read-only cursors (SQL_CONCUR_READ_ONLY).

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