Buffer Overflow Vulnerability in psqlODBC by PostgreSQL
CVE-2026-120057

7.5HIGH

Key Information:

Vendor

Postgresql
Status
Psqlodbc
Vendor
CVE Published:
2 November 2026

What is CVE-2026-120057?

The psqlODBC driver contains a vulnerability where a large-object read (loread) response can exceed the application's buffer size, leading to potential memory corruption. This occurs when the length sent by the server is not verified against the buffer's capacity. As a result, an untrusted server or an intermediary attacker can exploit this flaw to inject arbitrary data into the client's memory. This vulnerability can be triggered whenever a large-object column is fetched, making it critical for users to ensure they are running updated versions of psqlODBC to mitigate risk.

Affected Version(s)

psqlODBC 0 < 18.00.0006

References

https://github.com/postgresql-interfaces/psqlodbc/securit...
vendor-advisory

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.