CVE-2020-24653
Expo on iOS is insecure due incorrect security attribute application
secure-store in Expo through 2.16.1 on iOS provides the insecure kSecAttrAccessibleAlwaysThisDeviceOnly policy when WHEN_UNLOCKED_THIS_DEVICE_ONLY is used.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
secure-store in Expo through 2.16.1 on iOS provides the insecure kSecAttrAccessibleAlwaysThisDeviceOnly policy when WHEN_UNLOCKED_THIS_DEVICE_ONLY is used.
- Record
CVE-2020-24653- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 6.8 Medium
AV:N/AC:M/Au:N/C:P/I:P/A:P - Updated
- 2026-11-02
CVE List No score
secure-store in Expo through 2.16.1 on iOS provides the insecure kSecAttrAccessibleAlwaysThisDeviceOnly policy when WHEN_UNLOCKED_THIS_DEVICE_ONLY is used.
- Record
CVE-2020-24653- Updated
- 2026-11-02
EUVDEUVD-2022-5247 No score
secure-store in Expo through 2.16.1 on iOS provides the insecure kSecAttrAccessibleAlwaysThisDeviceOnly policy when WHEN_UNLOCKED_THIS_DEVICE_ONLY is used.
- Record
EUVD-2022-5247- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-rwx9-wqj8-vr77 No score
Expo on iOS is insecure due incorrect security attribute application
secure-store in Expo through 9.1.0 on iOS provides the insecure kSecAttrAccessibleAlwaysThisDeviceOnly policy when WHEN_UNLOCKED_THIS_DEVICE_ONLY is used.
- Record
GHSA-rwx9-wqj8-vr77- Updated
- 2026-11-02
OSVGHSA-rwx9-wqj8-vr77 No score
Expo on iOS is insecure due incorrect security attribute application
secure-store in Expo through 9.1.0 on iOS provides the insecure kSecAttrAccessibleAlwaysThisDeviceOnly policy when WHEN_UNLOCKED_THIS_DEVICE_ONLY is used.
- Record
GHSA-rwx9-wqj8-vr77- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
exponpm |
before 9.1.0 | 9.1.0 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2020-24653 is a critical vulnerability (CVSS 9.8) in Expo, published August 26, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.17%, the 67th percentile. Fixed in expo 9.1.0.