CVE-2026-109448 psqlODBC SQLBindParameter heap memory corruption when binding more than 32767 parameters
An integer overflow in psqlODBC allows heap memory corruption and potential code execution when binding excessive parameters, affecting applications using the driver.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-109448?
CVE-2026-109448 is a medium-severity vulnerability in PostgreSQL psqlODBC, published on 12 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
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.
Which versions are affected by CVE-2026-109448?
Linux distribution packages (2)
psqlODBC openSUSE:Leap 16.0 | All versions | 18.00.0005-bp160.1.1 |
psqlODBC openSUSE:Tumbleweed | All versions | 18.00.0005-1.1 |
How do I fix CVE-2026-109448?
Upgrade to a fixed version.
Is CVE-2026-109448 being exploited?
There is no known exploitation of CVE-2026-109448 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2026-109448, DEBIAN-CVE-2026-109448, GHSA-cmfx-rm3r-p2jr, UBUNTU-CVE-2026-109448, openSUSE-SU-2026:12135-1, openSUSE-SU-2026:22122-1.