All vulnerabilities

Servers and applications

CVE-2026-6473

Integer wraparound in multiple PostgreSQL server features allows an unprivileged database user to cause the server to undersize an allocation and write out-of-bounds. This may execute arbitrary code as the operating system user running the database. In applications that pass gigabyte-scale user inputs to the relevant database functions, the application input provider may achieve a segmentation…

Severity
High 8.8
Published
14 May 2026
Last changed
25 Aug 2026
Added to UpHeron
16 Oct 2026
Fixed in
14.23, 15.18, 16.14, 17.10, 18.4
Sources
NVD

Affected software

SoftwareAffected versions
PostgreSQLServers and applications · cpe:a:postgresql:postgresql
  • Every version before 14.23
  • From 15.0 before 15.18
  • From 16.0 before 16.14
  • From 17.0 before 17.10
  • From 18.0 before 18.4

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2026-6473
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2026-6473