Integer overflow in PostgreSQL - CVE-2026-6473
Published: May 14, 2026
Vulnerability identifier: #VU131455
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-6473
CWE-ID: CWE-190
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: PostgreSQL Global Development Group
Affected software:
PostgreSQL
PostgreSQL
Detailed vulnerability description
The vulnerability allows a remote user to cause a denial of service.
The vulnerability exists due to integer overflow in multiple PostgreSQL server features when processing application-supplied input. A remote user can provide crafted input to cause a denial of service.
The integer wraparound can undersize an allocation and lead to an out-of-bounds write that results in a segmentation fault.
How to mitigate CVE-2026-6473
Install security update from vendor's website.