Buffer overflow in PostgreSQL Psqlodbc
CVE-2026-120061
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- f86ef6dc-4d3a-42ad-8f28-e6d5547a5007 (vendor-advisory)
Frequently asked questions
- What is CVE-2026-120061?
- CVE-2026-120061 is a high-severity vulnerability in PostgreSQL Psqlodbc, classified under Stack-based Buffer Overflow. CVSS score: 7.5/10. Published 2026-11-02.
- How severe is CVE-2026-120061?
- High severity. CVSS v3 base score is 7.5 out of 10.