---
id: "CVE-2026-58971"
kind: "vulnerability"
aliases: ["CVE-2026-58971"]
title: "MuPDF print driver: integer overflow allows out-of-bounds memory read"
severity: "unknown"
cvss: null
epss: null
exploited: false
status: "open"
category: "other"
products: []
ecosystems: []
tags: ["mupdf", "other", "pdf"]
not_affected_if: []
published_at: "2026-11-02T20:17:53+00:00"
first_seen_at: "2026-11-02T20:35:34+00:00"
updated_at: "2026-11-02T20:38:28+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-58971", "first_seen_at": "2026-11-02T20:35:34+00:00"}]
---

# MuPDF print driver: integer overflow allows out-of-bounds memory read

A bounds check in the _mupdf_get_hdr function of wprint_mupdf.c can be defeated by an integer overflow, causing an out-of-bounds read. An attacker with local access could read memory contents, which may disclose information.

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

## Timeline

- 2026-11-02T20:35:34+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-58971

## From the sources

In _mupdf_get_hdr of wprint_mupdf.c, there is a possible out-of-bounds read due to an integer overflow. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation.

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_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_