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CVE-2026-2006

Missing validation of multibyte character length in PostgreSQL text manipulation allows a database user to issue crafted queries that achieve a buffer overrun.

Impact

Missing validation of multibyte character length in PostgreSQL text manipulation allows a database user to issue crafted queries that achieve a buffer overrun. That suffices to execute arbitrary code as the operating system user running the database. Versions before PostgreSQL 18.2, 17.8, 16.12, 15.16, and 14.21 are affected.

Affected products

VendorProductAffected versions
PostgresqlPostgresql
from 14.0 before 14.21
from 15.0 before 15.16
from 16.0 before 16.12
from 17.0 before 17.8
from 18.0 before 18.2

Weakness classification

CWE-129CWE-1285

References