Integer Overflow or Wraparound Affecting postgresql18-docs package, versions <0:18.4-1.amzn2023.0.1


Severity

Recommended
0.0
high
0
10

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.4% (32nd percentile)

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  • Snyk IDSNYK-AMZN2023-POSTGRESQL18DOCS-17288191
  • published10 Jun 2026
  • disclosed14 May 2026

Introduced: 14 May 2026

CVE-2026-6473  (opens in a new tab)
CWE-190  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 postgresql18-docs to version 0:18.4-1.amzn2023.0.1 or higher.
This issue was patched in ALAS2023-2026-1780.

NVD Description

Note: Versions mentioned in the description apply only to the upstream postgresql18-docs package and not the postgresql18-docs package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2023 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1