CVE-2026-6470: Missing Authorization in PostgreSQL
CVE-2026-6470 is a medium severity vulnerability in PostgreSQL affecting versions prior to 18.6, 17.11, 16.15, 15.19, and 14.24. It involves missing authorization checks in certain DDL commands related to types, allowing an object creator to cause denial of service by creating dependencies that prevent ALTER and DROP operations on the type. The vulnerability does not impact confidentiality or integrity but can cause availability issues.
AI Analysis
Technical Summary
This vulnerability arises from missing authorization checks in PostgreSQL's handling of DDL commands involving types. While many DDL operations properly check privileges, assigning a range subtype and referencing the type from an SQL expression did not enforce authorization. This flaw allows an object creator to create dependencies on the type, which can lead to denial of service by blocking ALTER and DROP operations on that type. The issue affects PostgreSQL versions before 18.6, 17.11, 16.15, 15.19, and 14.24.
Potential Impact
The impact is limited to denial of service (availability) by preventing legitimate ALTER and DROP operations on affected types due to unauthorized dependencies. There is no impact on confidentiality or integrity.
Mitigation Recommendations
A fix is available in PostgreSQL versions 18.6, 17.11, 16.15, 15.19, and 14.24 and later. Users should upgrade to these or later versions to remediate the vulnerability.
CVE-2026-6470: Missing Authorization in PostgreSQL
Description
CVE-2026-6470 is a medium severity vulnerability in PostgreSQL affecting versions prior to 18.6, 17.11, 16.15, 15.19, and 14.24. It involves missing authorization checks in certain DDL commands related to types, allowing an object creator to cause denial of service by creating dependencies that prevent ALTER and DROP operations on the type. The vulnerability does not impact confidentiality or integrity but can cause availability issues.
CVSS v3.1
Score 4.3medium
Affected software
PostgreSQL
pkg:deb/postgresql/postgresqlRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability arises from missing authorization checks in PostgreSQL's handling of DDL commands involving types. While many DDL operations properly check privileges, assigning a range subtype and referencing the type from an SQL expression did not enforce authorization. This flaw allows an object creator to create dependencies on the type, which can lead to denial of service by blocking ALTER and DROP operations on that type. The issue affects PostgreSQL versions before 18.6, 17.11, 16.15, 15.19, and 14.24.
Potential Impact
The impact is limited to denial of service (availability) by preventing legitimate ALTER and DROP operations on affected types due to unauthorized dependencies. There is no impact on confidentiality or integrity.
Mitigation Recommendations
A fix is available in PostgreSQL versions 18.6, 17.11, 16.15, 15.19, and 14.24 and later. Users should upgrade to these or later versions to remediate the vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- PostgreSQL
- Date Reserved
- 2026-04-17T00:22:12.954Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a7dc619bf8831d5393e5419
Added to database: 08/13/2026, 13:26:49 UTC
Last enriched: 09/13/2026, 13:04:15 UTC
Last updated: 09/26/2026, 01:47:43 UTC
Views: 58
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