---
id: "CVE-2026-112049"
kind: "vulnerability"
aliases: ["CVE-2026-112049"]
title: "Vita3K: crafted .vpk archives write files outside the install directory"
severity: "medium"
cvss: 6.7
epss: null
exploited: false
status: "open"
category: "other"
products: []
ecosystems: []
tags: ["desktop", "emulator", "other", "vita3k"]
not_affected_if: ["build-4187-or-later", "no-vpk-installs"]
published_at: "2026-10-18T13:16:36+00:00"
first_seen_at: "2026-10-23T21:57:15+00:00"
updated_at: "2026-10-25T03:46:45+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-112049", "first_seen_at": "2026-10-23T21:57:15+00:00"}]
---

# Vita3K: crafted .vpk archives write files outside the install directory

Vita3K, a PS Vita emulator, fails to block '..' segments and absolute paths in zip entry names when installing a .vpk archive. A malicious archive can write attacker-chosen files to any location Vita3K can write to, which may lead to code execution on the host.

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

## How to check

- Check the Vita3K build number: unknown how to query it from the sources; compare against build 4187
- Look at whether the user installs .vpk files from untrusted sources

## Fix

- Update Vita3K to build `4187` or later
- Install .vpk archives only from sources you trust until updated

## Timeline

- 2026-10-23T21:57:15+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-112049

## From the sources

Vita3K before build 4187 contains a path traversal (zip slip) vulnerability in install_archive_content() that allows attackers to write files outside the install directory via crafted .vpk archives. Attackers can embed '..' segments or absolute paths in zip entry names to write attacker-controlled files anywhere writable by Vita3K, potentially enabling host 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_