What’s Vulnerable › Vulnerabilities

CVE-2024-21668: Insertion of Sensitive Information into Log File in react-native-mmkv

• Severity: medium (CVSS 4.9 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-01-09 · updated 2026-06-17
• Weakness: CWE-532

Description

react-native-mmkv is a library that allows easy use of MMKV inside React Native applications. Before version 2.11.0, the react-native-mmkv logged the optional encryption key for the MMKV database into the Android system log. The key can be obtained by anyone with access to the Android Debugging Bridge (ADB) if it is enabled in the phone settings. This bug is not present on iOS devices. By logging the encryption secret to the system logs, attackers can trivially recover the secret by enabling ADB and undermining an app's thread model. This issue has been patched in version 2.11.0.

Affected products

• mrousavy react-native-mmkv: before 2.11.0 — fixed in 2.11.0

How to fix

Upgrade to a fixed version: mrousavy react-native-mmkv 2.11.0. Check the vendor advisory for mitigations.

References

• https://github.com/mrousavy/react-native-mmkv/commit/a8995ccb7184281f7d168bad3e9987c9bd05f00d
• https://github.com/mrousavy/react-native-mmkv/releases/tag/v2.11.0
• https://github.com/mrousavy/react-native-mmkv/security/advisories/GHSA-4jh3-6jhv-2mgp
• https://github.com/mrousavy/react-native-mmkv/commit/a8995ccb7184281f7d168bad3e9987c9bd05f00d
• https://github.com/mrousavy/react-native-mmkv/releases/tag/v2.11.0
• https://github.com/mrousavy/react-native-mmkv/security/advisories/GHSA-4jh3-6jhv-2mgp

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