---
id: "CVE-2026-89229"
kind: "vulnerability"
aliases: ["CVE-2026-89229"]
title: "BlueLM Copilot: path traversal lets a rogue Android app write files"
severity: "medium"
cvss: 5.1
epss: null
exploited: false
status: "open"
category: "other"
products: []
ecosystems: []
tags: ["android", "bluelm-copilot", "other", "vivo"]
not_affected_if: ["copilot-not-installed"]
published_at: "2026-11-03T10:17:19+00:00"
first_seen_at: "2026-11-03T10:20:16+00:00"
updated_at: "2026-11-03T10:20:43+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-89229", "first_seen_at": "2026-11-03T10:20:16+00:00"}]
---

# BlueLM Copilot: path traversal lets a rogue Android app write files

The ShareActivity component of the vivo BlueLM Copilot app (com.vivo.ai.copilot) does not restrict file names supplied through a ContentProvider, so '..' sequences escape the intended directory. A malicious app installed on the same phone can send a crafted share intent and write arbitrary files into the Copilot app's reachable storage.

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

## Timeline

- 2026-11-03T10:20:16+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-89229

## From the sources

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') in the ShareActivity component of BlueLM Copilot (com.vivo.ai.copilot) allows a malicious application installed on the same device to write arbitrary files via a crafted ACTION_SEND intent with a ContentProvider-supplied file name containing '..' sequences.

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