A vulnerability involving changing the data type of a table column can easily be exploited to cause a backend crash, and in principle might be used to read database content that the user should not be able to access.
For more information about PostgreSQL versioning,
please visit the versioning page.
Reporting Security Vulnerabilities
If you wish to report a new security vulnerability in PostgreSQL, please
send an email to
For reporting non-security bugs, please see the Report a Bug page.