Integer overflow in Postgresql

CVE-2026-16241

Integer underflow in PostgreSQL ECPG allows a database server administrator to achieve temporary denial of service against the ECPG client via sending a bytea value lacking the mandatory prefix. The client overwrites a huge memory region…

CVSS v3 metric

CVSS v3 base score 3.8 (Low). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:L.

Affected products

  • N/a Postgresql — versions 18, 17, 16

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-16241?
CVE-2026-16241 is a low-severity vulnerability in Postgresql, classified under Integer Underflow. CVSS score: 3.8/10. Published 2026-08-13.
How severe is CVE-2026-16241?
Low severity. CVSS v3 base score is 3.8 out of 10.