Vulnerability · Published Nov 2, 2026 · Assigned by PostgreSQL
CVE-2026-120059psqlODBC uses a server-supplied column name as a format string
Medium 6.8
In plain English
A medium-severity security flaw in psqlODBC from PostgreSQL. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 18% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
For an updatable cursor over a table without OIDs that has an auto-increment int4 column, psqlODBC places that column's name, as reported by the server, into a printf-style format string. It later expands that string with one argument while it builds the WHERE clause of its positioned SELECT, UPDATE, and DELETE statements. A column name that contains format directives makes the driver read unrelated memory, which can crash the application or copy client memory into query text sent to the server. The name can come from a server not trusted under current SSL settings, or from any database user who can create a table that the application reads with an updatable cursor. Versions before psqlODBC 18.00.0006 are affected.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | psqlodbc | no fix listed | DEBIAN-CVE-2026-120059 |
| Debian:13 | psqlodbc | no fix listed | DEBIAN-CVE-2026-120059 |
| Debian:14 | psqlodbc | 1:18.00.0006-1 | DEBIAN-CVE-2026-120059 |
| Ubuntu:22.04:LTS | psqlodbc | no fix listed | UBUNTU-CVE-2026-120059 |
| Ubuntu:24.04:LTS | psqlodbc | no fix listed | UBUNTU-CVE-2026-120059 |
| Ubuntu:26.04:LTS | psqlodbc | no fix listed | UBUNTU-CVE-2026-120059 |
| Ubuntu:26.10 | psqlodbc | no fix listed | UBUNTU-CVE-2026-120059 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| PostgreSQL | psqlODBC | 0 – before 18.00.0006 |
Weakness: CWE-134 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:H