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TI-2026-83946 Aliases CVE-2026-120061GHSA-rwj3-5rgf-rr95

Stack buffer overflow in psqlODBC ODBC escape parser

Priority LOW 35CWE-121Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
High
Impact type
Code execution
Confidentiality · integrity · availability
High · High · 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

PostgreSQL psqlODBC before 18.00.0006 is affected. The parser for ODBC escape sequences writes argument offsets of a {fn} escape into a fixed 16-entry stack array without a bounds check, and the array is not initialized (CWE-121). An application that forwards untrusted SQL text to the driver lets an attacker corrupt its process memory.

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

Description from the CNA

The psqlODBC parser for ODBC escape sequences in application SQL text writes the argument offsets of a {fn} escape into a fixed 16-entry stack array without a bound and does not initialize the array. An escape with too many arguments overflows the stack, and a reference to an unsupplied argument copies arbitrary bytes into the query. The copy of a {d}, {t}, {ts}, or {escape} body also writes one byte past a 128-byte stack buffer. An application that forwards untrusted SQL text to the driver exposes its process to memory corruption. Versions before psqlODBC 18.00.0006 are affected.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00342 27th 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
Total

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

Affected products

VendorProductAffected versionsFixed inStatusSource
PostgreSQLpsqlODBCbefore 18.00.000618.00.0006Patch availableCNA
  • psqlODBC VendorPostgreSQL Affected before 18.00.0006 Fixed in 18.00.0006 Patch available CNA

Remediation

Upgrade psqlODBC to 18.00.0006, which fixes the flaw. Red Hat Enterprise Linux 6, 7, 8, 9 and 10 are affected, and Red Hat lists no available plan for them.

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 ·

    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-2026-83943 Heap buffer overflow in psqlODBC row cache on later FETCHPriority LOW 34
    Show all 11 records →

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise Linux 10AffectedNo fix yet
Red Hat Enterprise Linux 6AffectedNo fix yet
Red Hat Enterprise Linux 7AffectedNo fix yet
Red Hat Enterprise Linux 8AffectedNo fix yet
Red Hat Enterprise Linux 9AffectedNo fix yet

Timeline

  1. 2026-11-02 Threatist record created from CVE-2026-120061
  2. 2026-11-02 CISA SSVC decision points changed
  3. 2026-11-02 Priority changed: MEDIUM → LOW
  4. 2026-11-02 Alias added: GHSA-rwj3-5rgf-rr95
  5. 2026-11-03 Affected versions changed · Red Hat
  6. 2026-11-03 CVSS score added · Red Hat

References

Advisory 1

  • 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