---
id: "CVE-2026-112056"
kind: "vulnerability"
aliases: ["CVE-2026-112056"]
title: "wvWare wv: crafted Word file crashes apps via heap out-of-bounds read"
severity: "medium"
cvss: 6.8
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["abiword", "document-conversion", "package", "self-hosted", "wv", "wvware"]
not_affected_if: ["no-doc-parsing", "no-untrusted-input"]
published_at: "2026-10-18T13:16:37+00:00"
first_seen_at: "2026-10-23T21:57:15+00:00"
updated_at: "2026-10-25T03:44:58+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-112056", "first_seen_at": "2026-10-23T21:57:15+00:00"}]
---

# wvWare wv: crafted Word file crashes apps via heap out-of-bounds read

wvWare's wv library has a heap out-of-bounds read in wvGetSTSH when parsing Word stylesheets. A crafted .doc file with ten or fewer styles or out-of-range base indexes makes the reading application crash, as demonstrated with AbiWord.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check whether any application in your stack links the wv or wvWare library, such as AbiWord, or uses a converter built on it.
- unknown for the exact package and version names in the sources.

## Fix

- unknown: the sources do not name a fixed wv version. Check the wv project for a release newer than `1.2.9`.
- Until patched, do not open untrusted .doc files with wv-based converters.

## Timeline

- 2026-10-23T21:57:15+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-112056

## From the sources

wvWare wv through 1.2.9 contains a heap-based out-of-bounds read vulnerability in wvGetSTSH in stylesheet.c that allows attackers to crash applications by supplying crafted Word stylesheets. Attackers can provide a .doc file with ten or fewer styles or out-of-range style base indexes to read past heap arrays, crashing applications such as AbiWord.

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