Vulnerability in skylot jadx-core package: Incorrect Behavior Order in vulnerable dependency
Summary
GHSA-fjh6-p566-wr6q: skylot jadx affected by Incorrect Behavior Order in vulnerable dependency. Affects io.github.skylot:jadx-core versions < 1.4.3. Fixed in 1.4.3. How to fix ↓
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Background
The skylot jadx-core package is a Maven ecosystem package that provides a Java decompiler for Android applications. It is used to convert Android APK files into Java source code for analysis and debugging purposes. The package is widely used by developers and security researchers to understand the inner workings of Android applications. However, the package is vulnerable to an Incorrect Behavior Order vulnerability in its dependency, protobuf-java version 3.11.4.
Vulnerability Detail
The vulnerability in the skylot jadx-core package arises from the use of a vulnerable version of the protobuf-java library. The specific vulnerability, identified as CVE-2021-22569, allows an attacker to execute arbitrary code or cause a denial of service by sending a specially crafted message to an application that uses the vulnerable library. This vulnerability can be exploited remotely without authentication. The vulnerability was fixed in version 1.4.3 of the jadx-core package by updating the dependency to a non-vulnerable version of protobuf-java.
How To Fix
Latest published version: 1.5.6 as of 23 Oct 2026
Upgrading to it may include breaking changes; the version below is the minimum fixed release for this vulnerability.
If you need the minimum change
1.4.3
This is the first release that contains the fix.
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Conclusion
The skylot jadx-core package is vulnerable to an Incorrect Behavior Order vulnerability in its dependency, protobuf-java version 3.11.4. To fix the vulnerability, developers should update their project's dependencies to include version 1.4.3 or later of the package. No known workaround exists for this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
See every vulnerability recorded for io.github.skylot:jadx-core →
FAQ
The skylot jadx-core package is a Java decompiler for Android applications. It is used to convert Android APK files into Java source code for analysis and debugging purposes.
The vulnerability in skylot jadx-core package is an Incorrect Behavior Order vulnerability in its dependency, protobuf-java version 3.11.4. It allows an attacker to execute arbitrary code or cause a denial of service by sending a specially crafted message to an application that uses the vulnerable library.
To fix the vulnerability, you need to update your project's dependencies to include version 1.4.3 or later of the skylot jadx-core package. This can be done by modifying your project's Maven configuration file (pom.xml) to specify the updated version of the package.
No, there is no known workaround for the vulnerability. The only way to fix it is to update the skylot jadx-core package to a non-vulnerable version.
Yes, the vulnerability can be exploited remotely without authentication. An attacker can send a specially crafted message to an application that uses the vulnerable skylot jadx-core package to execute arbitrary code or cause a denial of service.
References
Related vulnerabilities
Recent vulnerabilities recorded for io.github.skylot:jadx-core.
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