Medium · CVSS 5.9CVE-2026-109448

psqlODBC SQLBindParameter heap memory corruption when binding more than 32767 parametersCVE-2026-109448

Answer in brief

CVE-2026-109448 records a Medium severity (CVSS 5.9) vulnerability in psqlODBC SQLBindParameter heap memory corruption when binding more than 32767 parameters. The current sources do not mark it as known exploited. The current feed maps PostgreSQL/psqlODBC (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 12, 2026Updated Oct 12, 2026Source checked Oct 12, 2026First seen by HOL Oct 12, 2026Material review Oct 12, 2026

Upstream Advisory

Key facts

Risk: Medium · CVSS 5.9
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

CVSS is 5.9. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps PostgreSQL/psqlODBC (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
PostgreSQL/psqlODBCgeneric	>=08.01.0102 <18.00.0005	18.00.0005

Recommended response

Check inventory. Check lockfiles and deployed manifests for PostgreSQL/psqlODBC.
Review the reported fix. Source-reported solution: Upgrade to psqlODBC 18.00.0005 or later. SQLBindParameter now rejects parameter numbers outside 1..32767 with SQLSTATE 07009 (invalid descriptor index).

Evidence timeline and material changes

Published upstream
Oct 12, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Oct 12, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Oct 12, 2026

Sources and claim methodology

GitHub security advisorygithub.com

Upstream source description

Integer wraparound in psqlODBC SQLBindParameter allows an application, or an attacker who controls how many parameters the application binds on one statement, to corrupt heap memory. psqlODBC stores the binding count in a signed 16-bit field. Binding parameter number 32768 wraps that count to -32768. Binding parameter 32769 then writes about 2.5 MB of zeros starting 1.25 MB before the binding array, which crashes the application or leaves it running on a corrupted heap. Applications that build parameter lists from untrusted input, such as an IN (?, ?, ...) list, are exposed. Versions before psqlODBC 18.00.0005 are affected.

Quoted source text, attributed separately from HOL analysis.