CVE-2026-42049: jadx: RCE Via Groovy Code Injection in Gradle Export

Severity: high (CVSS 8.4 v4.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-07-14 · updated 2026-10-24
Weakness: CWE-94

Description

jadx is a Dex to Java decompiler. Prior to 1.5.6, jadx inserts the android:versionName value from an AndroidManifest into the generated app/build.gradle Groovy template without proper sanitization when exporting a decompiled APK as an Android Gradle project. A malicious APK can break out of the string context so that opening or building the exported Gradle project executes attacker-controlled Groovy code on the victim machine. This issue is fixed in version 1.5.6.

Affected products

skylot jadx: before 1.5.6

References

https://github.com/skylot/jadx/commit/5a6e660b4663d998d52c7dc4511299f3368ef611
https://github.com/skylot/jadx/releases/tag/v1.5.6
https://github.com/skylot/jadx/security/advisories/GHSA-w6f5-h4x4-rfpj

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