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CVE-2026-6473

Integer wraparound in multiple PostgreSQL server features allows an unprivileged database user to cause the server to undersize an allocation and write out-of-…

Impact

Integer wraparound in multiple PostgreSQL server features allows an unprivileged database user to cause the server to undersize an allocation and write out-of-bounds. This may execute arbitrary code as the operating system user running the database. In applications that pass gigabyte-scale user inputs to the relevant database functions, the application input provider may achieve a segmentation fault. Versions before PostgreSQL 18.4, 17.10, 16.14, 15.18, and 14.23 are affected.

Affected products

VendorProductAffected versions
PostgresqlPostgresql
before 14.23
from 15.0 before 15.18
from 16.0 before 16.14
from 17.0 before 17.10
from 18.0 before 18.4

Weakness classification

CWE-190

References