---
id: CVE-2026-90775
title: >-
  PostGIS address_standardizer through 3.7.0 fails to validate the Weight
  parameter from caller-supplied rules tables before using it as an array index
summary: >-
  PostGIS address_standardizer through 3.7.0 fails to validate the Weight
  parameter from caller-supplied rules tables before using it as an array index.
  Attackers can craft malicious rule rows with out-of-range Weight values to
  trigger out…
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-125
vendor: PostGIS
product: address_standardizer
affected:
  - address_standardizer <= 3.7.0
published: '2026-09-13'
updated: '2026-09-24'
sourceUpdated: '2026-09-24T21:08:22.573'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-90775'
references:
  - url: 'https://github.com/postgis/address_standardizer'
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/postgis/address_standardizer/blob/e987949e0fccff6a0e7a6d3f86814d5c7a01f481/NEWS.md
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/postgis/address_standardizer/blob/v3.7.0/src/analyze.c#L860
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/postgis/address_standardizer/blob/v3.7.0/src/gamma.c#L301-L311
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/postgis/address_standardizer/commit/a5cb4b1360a040973092f13b1af97a718e7e104a
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/postgis/address_standardizer/commit/e987949e0fccff6a0e7a6d3f86814d5c7a01f481
    label: disclosure@vulncheck.com
  - url: 'https://github.com/postgis/address_standardizer/pull/6'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/postgis-address-standardizer-through-3.7.0-out-of-bounds-read-via-unvalidated-rule-weight
    label: disclosure@vulncheck.com
tags:
  - nvd
  - cve.org
epss: 0.00626
epssPercentile: 0.47721
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-18T17:13:45.515625Z'
ingestedAt: '2026-09-14T15:23:07.471Z'
---

## Overview

PostGIS address_standardizer through 3.7.0 fails to validate the Weight parameter from caller-supplied rules tables before using it as an array index. Attackers can craft malicious rule rows with out-of-range Weight values to trigger out-of-bounds reads in the load_value array, causing the PostgreSQL backend process to crash and terminate all cluster sessions.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.