CVE-2026-18447

EUVD-2026-124432
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.
Type Confusion
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
8.8 HIGH
NETWORK
LOW
LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Debian logo
Debian Releases
Debian Product
Codename
postgresql-15
bookworm
vulnerable
bookworm (security)
vulnerable
postgresql-17
trixie
vulnerable
trixie (security)
vulnerable
postgresql-18
forky
vulnerable
sid
18.7-1
fixed
Common Weakness Enumeration
References
https://www.postgresql.org/support/security/CVE-2026-18447/