CVE-2026-14662
HighCVSS 8.8Exploitation Probability (EPSS)
Low risk49th percentile - higher than 49% of all known CVEs
Summary
Integer wraparound in PostgreSQL tsvector and tsquery data type functions allows an unprivileged database user to cause the server to undersize an allocation and write out-of-bounds, via crafted large inputs. This may execute arbitrary code as the operating system user running the database. Versions before 18.5, 17.11, 16.15, 15.19, and 14.24 are affected.
Risk Assessment
Even an unprivileged database user could exploit this to execute code on the server, potentially leading to privilege escalation and data integrity compromise.
Recommendation
Upgrade PostgreSQL to a patched version (18.5, 17.11, 16.15, 15.19, 14.24 or later).
Original NVD description (English source)
Integer wraparound in PostgreSQL tsvector and tsquery data type functions allows an unprivileged database user to cause the server to undersize an allocation and write out-of-bounds, via crafted large inputs. This may execute arbitrary code as the operating system user running the database. These types are typically sourced from application logic, not taken from the application's user. Hence, application users attacking the database, through the application as a conduit, are unlikely. CVE-2026-6473 had fixed similar problems. Versions before PostgreSQL 18.5, 17.11, 16.15, 15.19, and 14.24 are affected.