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CVE PROGRAM SOURCE RECORD8.8 High

CVE-2026-6473

PostgreSQL server undersizes allocations, via integer wraparound

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Status
Published
Published
Updated
Assigning organization
PostgreSQL

Description

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 fault. Versions before PostgreSQL 18.4, 17.10, 16.14, 15.18, and 14.23 are affected.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

n/a PostgreSQL

Default version status: unaffected

  • 18 to < 18.4affected
  • 17 to < 17.10affected
  • 16 to < 16.14affected
  • 15 to < 15.18affected
  • 0 to < 14.23affected

References