Vulnerability in PostgreSQL psqlODBC

[ Description ]Official 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.

[ Fixes ]Fixes and patches

• Security bulletin: PostgreSQL psqlodbc-18000005-released-with-security-fix-for-cve-2026-109448-3404Vendor patch or bulletin · CERT-FR · postgresql.org/about/news/psqlodbc-18000005-released-with-security-fix, cited by CERT-FR CERTFR-2026-AVI-1319

[ Advisories ]Government CERT advisories

• BSI CERT-Bund19 Oct 2026WID-SEC-2026-4038

  PostgreSQL psqlODBC Treiber: Vulnerability allows denial of service Translated from German

  CVE-2026-109448
• CERT-FR15 Oct 2026CERTFR-2026-AVI-1319

  Vulnerability in PostgreSQL psqlODBC Translated from French

  A vulnerability has been discovered in PostgreSQL psqlODBC. It allows an attacker to cause remote denial of service.

  CVE-2026-109448

[ References ]References

• github.com/postgresql-interfaces/psqlodbc/security/advisories/GHSA-cmfx-rm3r-p2jr