psqlODBC does not validate server-supplied counts and lengths

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-120060
StatePUBLISHED
AssignerPostgreSQL
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-11-02 19:18:03 UTC
Updated2026-11-02 20:17:39 UTC
DescriptionpsqlODBC trusts counts and lengths in server data in three places. SQLBulkOperations uses a server-supplied row count in a size subtraction that can underflow. SQLStatistics iterates index keys using a server-supplied key count without bounding it to the fixed storage. Bytea octal decoding reads up to two bytes past the end of a truncated escape sequence. A server not trusted under current SSL settings can crash the client or make it read out of bounds. 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:N/UI:R/S:U/C:L/I:N/A:H

Problem Types: CWE-125 | CWE-191 | CWE-125 CWE-125 Out-of-bounds Read | CWE-191 CWE-191 Integer Underflow (Wrap or Wraparound)

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

CVSS v3.1 Breakdown

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

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/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-4mfx-... 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. The row count, the index-key count, and the octal escape length are checked before use.

Workarounds

CNA: Connect only to servers authenticated with sslmode=verify-full or an equivalent GSS setting.

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