CVE-2026-6460
PostgreSQL type confusion after ALTER ... SET DATA TYPE executes arbitrary code
Type confusion in PostgreSQL allows an object creator to execute arbitrary code as the operating system user running the database, via ALTER ... SET DATA TYPE primarily. Other DDL attack routes exist, such as "ALTER TABLE ... ADD COLUMN; ROLLBACK; ALTER TABLE ... ADD COLUMN". The system had inadequate tracking of typed values, and values were not self-identifying. Stale values could appear in data dictionary entries, PL/pgSQL variables, and many other parts of the system. PostgreSQL Versions before PostgreSQL 18.7, 17.12, 16.16, 15.20, and 14.25 are affected.
Fixes and workarounds
No remediation reported in collected sources.
Missing remediation information is not evidence that no patch exists.
Affected products and versions
| Product | Versions | Authority |
|---|---|---|
| PostgreSQL n/a |
≥ 18; < 18.7 (affected, rpm) ≥ 17; < 17.12 (affected, rpm) ≥ 16; < 16.16 (affected, rpm) ≥ 15; < 15.20 (affected, rpm) ≥ 0; < 14.25 (affected, rpm) Other versions: unaffected |
CNA: PostgreSQL |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 3.1 / 8.8 high |
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | CNA: PostgreSQL |
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
- https://www.postgresql.org/support/security/CVE-2026-6460/CNA: PostgreSQL
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