High severity8.8NVD Advisory· Published Nov 12, 2026

CVE-2026-18447

Description

Type confusion in PostgreSQL SQL-language functions allows an object creator to execute arbitrary code as the operating system user running the database, via an output parameter of type "any". Versions before PostgreSQL 18.7, 17.12, 16.16, 15.20, and 14.25 are affected.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

PostgreSQL/PostgreSQLllm-fuzzy
Range: <18.7, <17.12, <16.16, <15.20, <14.25

Patches

Vulnerability mechanics

References

www.postgresql.org/support/security/CVE-2026-18447/nvd

News mentions

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cvss	0.572
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patch	-0.070
ransomware	0.000