CVE-2007-0556: PostgreSQL

Medium severity, CVSS 6.6. EPSS: 3% chance of exploitation in the next 30 days.

The query planner in PostgreSQL before 8.0.11, 8.1 before 8.1.7, and 8.2 before 8.2.2 does not verify that a table is compatible with a "previously made query plan," which allows remote authenticated users to cause a denial of service (server crash) and possibly access database content via an "ALTER COLUMN TYPE" SQL statement, which can be leveraged to read arbitrary memory from the server.

Affected products

• PostgreSQL PostgreSQL: version 1.0 only; version 1.01 only; version 1.02 only; version 1.09 only; version 6.0 only; version 6.1 only; …

Published 2007-02-06. Last modified 2026-06-16.