---
id: "CVE-2026-104066"
kind: "vulnerability"
aliases: ["CVE-2026-104066"]
title: "Scribus: crafted Mac PICT image overflows heap memory during import"
severity: "high"
cvss: 8.5
epss: null
exploited: false
status: "open"
category: "other"
products: []
ecosystems: []
tags: ["desktop-publishing", "macos", "other", "scribus"]
not_affected_if: ["no-pict-import", "scribus-1.6.7-or-later"]
published_at: "2026-10-30T16:17:36+00:00"
first_seen_at: "2026-10-30T16:31:25+00:00"
updated_at: "2026-10-30T16:31:58+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-104066", "first_seen_at": "2026-10-30T16:31:25+00:00"}]
---

# Scribus: crafted Mac PICT image overflows heap memory during import

Scribus, a desktop publishing app, has a heap buffer overflow in its Mac PICT image loader when it unpacks 4-bit indexed pixel data. A crafted PICT file with inconsistent width and row data can write out of bounds when placed or imported, causing crashes or code execution.

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

## How to check

- Compare the installed Scribus version against `1.6.7`; anything earlier is listed as affected.
- Check whether users open or import PICT files in Scribus, since the flaw is in the PICT loader and import plugin.

## Fix

- Scribus: upgrade to `1.6.7` or later.

## Timeline

- 2026-10-30T16:31:25+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-104066

## From the sources

Scribus before 1.6.7 contains a heap buffer overflow vulnerability in the Mac PICT image loader and import plugin when unpacking 4-bit indexed pixel data. Attackers can supply a crafted PICT file with inconsistent width and row data that, when placed or imported, writes out of bounds, causing crashes or code execution.

---

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