---
id: "CVE-2026-119718"
kind: "vulnerability"
aliases: ["CVE-2026-119718"]
title: "Blender: crafted point cache file overflows heap, runs code as user"
severity: "high"
cvss: 8.5
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["3d-artists", "blender", "desktop", "package"]
not_affected_if: ["only-trusted-files", "patched-version"]
published_at: "2026-10-30T16:17:55+00:00"
first_seen_at: "2026-10-30T16:31:26+00:00"
updated_at: "2026-10-30T16:31:49+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-119718", "first_seen_at": "2026-10-30T16:31:26+00:00"}]
---

# Blender: crafted point cache file overflows heap, runs code as user

Blender's point cache reader multiplies an unchecked count when allocating memory, so a crafted cache file alongside a .blend file causes a heap buffer overflow. An attacker who gets a user to open such files can crash Blender or execute code with that user's privileges.

_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 build is from the official Blender release or a packaged distribution that may ship its own version.

## Fix

- Blender 4.5 line: `4.5.15` or later
- Blender 5.x line: `5.2.3` or later

## Timeline

- 2026-10-30T16:31:26+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-119718

## From the sources

Blender before 4.5.15 and 5.x before 5.2.3 contains a heap buffer overflow vulnerability caused by integer overflow in ptcache_data_alloc() when reading point cache files. Attackers can supply a crafted point cache file with a large totpoint value alongside a .blend file to crash Blender or execute code as the user.

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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_