High severity8.8NVD Advisory· Published Aug 13, 2026

CVE-2026-16239

Description

Type confusion in PostgreSQL "portal"/cursor lifecycle allows a user to execute arbitrary code as the operating system user running the database, via re-creation of a cursor or other portal with different types. Versions before PostgreSQL 18.5, 17.11, 16.15, 15.19, and 14.24 are affected.

AI Insight

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

Affected products

PostgreSQL/PostgreSQLllm-fuzzy
Range: <18.5, <17.11, <16.15, <15.19, <14.24

Patches

Vulnerability mechanics

References

www.postgresql.org/support/security/CVE-2026-16239/nvd

News mentions

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cvss	0.572
epss	0.000
exploit	0.000
kev	0.000
patch	-0.070
ransomware	0.000