---
id: CVE-2026-112048
title: >-
  libspatialite through 5.1.0 Uncontrolled Memory Allocation via ParseWkbPolygon
  Ring Count
summary: >-
  libspatialite through 5.1.0 fails to validate the polygon ring count in
  ParseWkbPolygon, allowing attackers to trigger uncontrolled interior-ring
  allocation via crafted geometry BLOBs. Attackers can supply a crafted polygon
  in a SpatiaLi…
severity: medium
cvss: 6.1
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H'
cvssSource: cna
cwe:
  - CWE-789
vendor: SpatiaLite
product: libspatialite
affected:
  - libspatialite <= 5.1.0
published: '2026-10-18'
updated: '2026-10-18'
sourceUpdated: '2026-10-18T12:19:36.940Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-112048'
references:
  - url: 'https://hackmd.io/@haindpwn/libspatialite-wkb-geometry-count-overflow'
  - url: >-
      https://www.gaia-gis.it/fossil/libspatialite/file?name=src/gaiageo/gg_wkb.c&ci=5a5528e8d2
  - url: >-
      https://www.vulncheck.com/advisories/libspatialite-through-5.1.0-uncontrolled-memory-allocation-via-parsewkbpolygon-ring-count
    label: >-
      VulnCheck Advisory: libspatialite through 5.1.0 Uncontrolled Memory
      Allocation via ParseWkbPolygon Ring Count
tags:
  - cve.org
ingestedAt: '2026-10-18T12:41:54.063Z'
---

## Overview

libspatialite through 5.1.0 fails to validate the polygon ring count in ParseWkbPolygon, allowing attackers to trigger uncontrolled interior-ring allocation via crafted geometry BLOBs. Attackers can supply a crafted polygon in a SpatiaLite database or ST_GeomFromWKB input to crash the process or corrupt heap memory on 32-bit builds.

## Affected

- `libspatialite <= 5.1.0`

## Remediation

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