---
id: "CVE-2026-119720"
kind: "vulnerability"
aliases: ["CVE-2026-119720"]
title: "Blender: crafted .blend file triggers heap out-of-bounds read and crash"
severity: "medium"
cvss: 6.8
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["3d", "blender", "creative-tools", "package"]
not_affected_if: ["blender-4.5.15-or-later", "blender-5.2.3-or-later"]
published_at: "2026-10-30T16:17:55+00:00"
first_seen_at: "2026-10-30T16:31:27+00:00"
updated_at: "2026-10-30T16:32:19+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-119720", "first_seen_at": "2026-10-30T16:31:27+00:00"}]
---

# Blender: crafted .blend file triggers heap out-of-bounds read and crash

Blender reads a GLOB block field from a .blend file without checking its declared length, causing a heap out-of-bounds read. A crafted .blend file with a truncated GLOB block crashes Blender when opened.

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

## How to check

- Run `blender --version` and compare against `4.5.15` for the 4.5 line and `5.2.3` for the 5.x line.
- Check whether the installed Blender is older than these versions.

## Fix

- Move to `4.5.15` or later on the 4.5 line.
- Move to `5.2.3` or later on the 5.x line.

## Timeline

- 2026-10-30T16:31:27+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-119720

## From the sources

Blender before 4.5.15 and 5.x before 5.2.3 contains a heap out-of-bounds read vulnerability in read_file_dna() that reads a GLOB block field without validating its declared length. Attackers can supply a crafted .blend file with a truncated GLOB block that, when opened, triggers the out-of-bounds read and crashes Blender.

---

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