# CVE-2026-42447: skylot jadx-gui HTML injection in Summary tab

Source: https://junglewise.ai/threats/cve-2026-42447-skylot-jadx-gui-html-injection-in-summary-tab  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-07-14. Updated: 2026-07-14  
License: CC BY 4.0 with a link back

CVE-2026-42447 · Severity: low · CVSS 3.6 · Published 2026-07-14

jadx is a popular tool used by developers and security researchers to decompile Android APK files into readable Java code. A vulnerability in the tool's graphical interface allows a malicious APK file to trigger unauthorized actions when opened. If a user views the 'Summary' tab of a specially crafted file, the application may disclose the user's IP address or attempt to interact with other software running on the user's local computer.

Technologies: [Skylot Jadx-Gui](https://junglewise.ai/threats/technologies/jadx). Vendors: [Skylot](https://junglewise.ai/threats/vendors/skylot).

## Quick answers

**Is CVE-2026-42447 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-42447 being exploited in the wild.

**How severe is CVE-2026-42447?** Low severity, with a CVSS score of 3.6, published 14 July 2026.

**Which products and versions are affected?** Skylot Jadx-Gui < 1.5.6.

**Is there a fix for CVE-2026-42447?** A patch was published on 2026-07-10: Version 1.5.6 released Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-42447 attacked?** It is attacked with local access, in a network appliance.

**Am I affected by CVE-2026-42447?** Check whether you run Skylot Jadx-Gui at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

A vulnerability exists in jadx-gui versions prior to 1.5.6 due to improper neutralization of input during HTML generation in SummaryNode.java. The application appends architecture names and counts derived from .so file paths within an APK directly into an HtmlPanel using builder.append() instead of builder.escape(). An attacker can exploit this by crafting an APK with a ZIP entry name containing URL-encoded HTML tags (e.g., <img> tags). When a victim opens the APK and views the Summary tab, the injected HTML is rendered, allowing for out-of-band requests (SSRF-like behavior) that can leak the victim's IP address or interact with services on localhost. This issue is primarily exploitable on non-Windows systems, as Windows path validation typically rejects the required special characters. The issue is fixed in version 1.5.6.

## Affected products

- skylot jadx-gui < 1.5.6

## Timeline

- 2026-07-10: patched: Version 1.5.6 released
- 2026-07-10: advisory: GitHub Security Advisory published
- 2026-07-14: disclosed: CVE-2026-42447 published to NVD

## References

- [https://github.com/skylot/jadx/commit/7713655feeb8e1c4b80797e8fc0e8eb1550b65ef](https://github.com/skylot/jadx/commit/7713655feeb8e1c4b80797e8fc0e8eb1550b65ef)
- [https://github.com/skylot/jadx/releases/tag/v1.5.6](https://github.com/skylot/jadx/releases/tag/v1.5.6)
- [https://github.com/skylot/jadx/security/advisories/GHSA-jwv3-q635-w9m4](https://github.com/skylot/jadx/security/advisories/GHSA-jwv3-q635-w9m4)

## Related threats

- [skylot jadx Groovy code injection in Gradle export](https://junglewise.ai/threats/cve-2026-42049-skylot-jadx-groovy-code-injection-in-gradle-export)