---
id: CVE-2026-75820
title: >-
  GNU Aspell contains an integer truncation vulnerability in the
  WritableDict::add() function in modules/speller/default/writable.cpp
summary: >-
  GNU Aspell contains an integer truncation vulnerability in the
  WritableDict::add() function in modules/speller/default/writable.cpp. When
  loading a personal wordlist, the word length is stored as a single byte,
  causing truncation for wor…
severity: low
cvss: 1.8
cvssVector: 'CVSS:4.0/AV:L/AC:H/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:L/SA:N'
cwe:
  - CWE-190
vendor: GNU
product: Aspell
affected:
  - Aspell < 0.60.8.3
published: '2026-10-06'
updated: '2026-10-06'
sourceUpdated: '2026-10-06T11:17:30.020'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-75820'
references:
  - url: 'http://aspell.net/'
    label: cvd@cert.pl
  - url: 'https://cert.pl/en/posts/2026/10/CVE-2026-75818'
    label: cvd@cert.pl
tags:
  - nvd
  - cve.org
cvssSource: cna
ingestedAt: '2026-10-06T11:57:26.914Z'
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-06T12:49:13.392681Z'
---

## Overview

GNU Aspell contains an integer truncation vulnerability in the WritableDict::add() function in modules/speller/default/writable.cpp. When loading a personal wordlist, the word length is stored as a single byte, causing truncation for words whose length is a multiple of 256. This leads to heap corruption. An attacker can exploit this by convincing a user to run aspell with a crafted personal wordlist containing such a word, resulting in denial of service.



This issue was fixed in commit 782ce94e4dc71eaec4ee1bd945eb3b9c47c5387d which will be released in version 0.60.8.3.

## Remediation

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