TI-2026-83952 Aliases CVE-2026-120067 GHSA-pwrw-wjmg-cx9r

Stack buffer overflow in psqlODBC when copying ctid and oid values

LOW 26CWE-121Published 2026-11-02 · Updated 2026-11-02

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: High
Impact type: Denial of service
Confidentiality · integrity · availability: None · None · High
Fix status: Partial Red Hat: 5 without a fix

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-121 and the CVSS impact.

Summary

Versions of psqlODBC before 18.00.0006 are affected. For updatable cursors, which are enabled by default, the driver copies server-sent ctid and oid values into a 32-byte stack buffer without checking their length, a stack-based buffer overflow (CWE-121). A server not trusted under current SSL settings, or a database user who can create a view with a column named ctid that the application reads with an updatable cursor, can send a value of 32 bytes or more and overwrite adjacent stack memory.

Written with Claude Haiku 5.5 from the sources below · 2026-11-03

Description from the CNA

For updatable cursors, which are enabled by default, psqlODBC adds hidden ctid and, for tables with OIDs, oid columns to the query. It copies each value into a 32-byte stack buffer using the length the server sent, without checking it against the buffer size, so a value of 32 bytes or more writes past the buffer. A server not trusted under current SSL settings can send such a value. So can any database user who can create a view with its own column named ctid that the application reads with an updatable cursor. Builds with _FORTIFY_SOURCE abort; other builds overwrite adjacent stack memory. Versions before psqlODBC 18.00.0006 are affected.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00348 28th percentileScored 2026-11-07

Fix Partial psqlODBC (PostgreSQL): 18.00.0006Red Hat: 5 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
PostgreSQL	psqlODBC	before 18.00.0006	18.00.0006	Patch available	CNA

psqlODBC VendorPostgreSQL Affected before 18.00.0006 Fixed in 18.00.0006 Patch available CNA

Remediation

Upgrade psqlODBC to 18.00.0006, the fixed version. Red Hat lists Red Hat Enterprise Linux 7, 8, 9 and 10 as affected with no fix available, and Red Hat Enterprise Linux 6 as affected with no fix planned.

Written with Claude Haiku 5.5 from the sources below · 2026-11-03

Fix · CNA psqlODBC (PostgreSQL) Fixed in 18.00.0006

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

Release · 2026-11-02
PostgreSQL psqlODBC 18.00.0006
11 records Highest priority Priority LOW 11 LOW
Other records, highest priority first
- TI-2026-83949 Out-of-bounds access in psqlODBC via unchecked column and row numbersPriority LOW 35
- TI-2026-83947 SQL injection in psqlODBC SQLSpecialColumns table and schema namesPriority LOW 35
- TI-2026-83946 Stack buffer overflow in psqlODBC ODBC escape parserPriority LOW 35
Show all 11 records →

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

Product	Status	Plan or fix
Red Hat Enterprise Linux 10	Affected	No fix yet: Fix deferred
Red Hat Enterprise Linux 6	Affected	No fix planned: Out of support scope
Red Hat Enterprise Linux 7	Affected	No fix yet: Fix deferred
Red Hat Enterprise Linux 8	Affected	No fix yet: Fix deferred
Red Hat Enterprise Linux 9	Affected	No fix yet: Fix deferred

Timeline

2026-11-02 Threatist record created from CVE-2026-120067
2026-11-02 CISA SSVC decision points changed
2026-11-02 Priority changed: MEDIUM → LOW
2026-11-02 Alias added: GHSA-pwrw-wjmg-cx9r
2026-11-03 Affected versions changed · Red Hat
2026-11-03 CVSS score added · Red Hat

References

Advisory 1

https://github.com/postgresql-interfaces/psqlodbc/security/advisories/GHSA-3r96-h2q4-6pxh

TI-2024-01491 pgjdbc SQL Injection via line comment generation CVSS 3.1CRITICAL 10.0
TI-2019-06651 In PostgreSQL 9.3 through 11.2, the "COPY TO/FROM PROGRAM" function allows superusers and… CVSS 3.0HIGH 7.2
TI-2017-05187 Improper authentication in postgresql CVSS 3.0CRITICAL 9.8
TI-2022-06097 Unchecked Class Instantiation when providing Plugin Classes CVSS 3.1CRITICAL 9.8
TI-2022-13237 SQL Injection in ResultSet.refreshRow() with malicious column names in pgjdbc CVSS 3.1HIGH 8.0
TI-2020-15711 SQL injection in postgresql CVSS 3.1HIGH 8.8

See all 228 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences