Riskcovery

CVE-2026-6473

PostgreSQL server undersizes allocations, via integer wraparound

State
Published
Severity
8.8 High
Published
May 14, 2026
Updated
Aug 25, 2026
Reserved
Apr 17, 2026

Read the record on cve.org

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.

Scores

CVSSScoreVectorSource
3.18.8 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HPostgreSQL
3.18.8 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hredhat-SADP

Weaknesses

  • CWE-190 Integer Overflow or Wraparound

Affected Products

ProductVersions
PostgreSQLn/a
  • 18 to before 18.4Affected
  • 17 to before 17.10Affected
  • 16 to before 16.14Affected
  • 15 to before 15.18Affected
  • before 14.23Affected

References

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