CVE-2026-120061 psqlODBC ODBC escape parser stack buffer overflow
- Exploited in the wild
- Not known
- Fix
- Available
What is CVE-2026-120061?
CVE-2026-120061 is a high-severity vulnerability in PostgreSQL psqlODBC, published on 2 Nov 2026.
Official description
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.
Which versions are affected by CVE-2026-120061?
How do I fix CVE-2026-120061?
Upgrade to a fixed version.
Is CVE-2026-120061 being exploited?
There is no known exploitation of CVE-2026-120061 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2026-120061, GHSA-hfm6-qfx8-v4xq, GHSA-rwj3-5rgf-rr95, UBUNTU-CVE-2026-120061.