Vulnerability Description
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 18.6, 17.11, 16.15, 15.19, and 14.24 are affected.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Postgresql | Postgresql | >= 14.0, < 14.24 |
Related Weaknesses (CWE)
References
- https://www.postgresql.org/support/security/CVE-2026-14662/Vendor Advisory
FAQ
What is CVE-2026-14662?
CVE-2026-14662 is a vulnerability with a CVSS score of 8.8 (HIGH). 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...
How severe is CVE-2026-14662?
CVE-2026-14662 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-14662?
Check the references section above for vendor advisories and patch information. Affected products include: Postgresql Postgresql.