# CVE-2026-103922: Ionic Capacitor path validation bypass in WebView

Source: https://junglewise.ai/threats/cve-2026-103922-capacitor-is-a-cross-platform-native-runtime-for-web  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-01. Updated: 2026-10-05  
License: CC BY 4.0 with a link back

CVE-2026-103922 · Severity: critical · CVSS 9.3 · Published 2026-10-01

Capacitor is a cross-platform app development framework that runs web applications on mobile devices using native WebView components. A path validation flaw in the WebView navigation guard allows attackers to trick users into clicking malicious links that navigate to an internal HTTP proxy endpoint, enabling the attacker to inject content that can steal sensitive data like stored credentials and cookies from the application's origin.

Vendors: [Maven](https://junglewise.ai/threats/vendors/maven), [npm](https://junglewise.ai/threats/vendors/npm), [Swift](https://junglewise.ai/threats/vendors/swifturl).

## Quick answers

**Is CVE-2026-103922 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-103922 being exploited in the wild.

**How severe is CVE-2026-103922?** Critical severity, with a CVSS score of 9.3, published 1 October 2026.

**Which products and versions are affected?** Ionic Capacitor 6.0.0 to 6.2.1, 7.0.0 to 7.6.8, 8.0.0 to 8.3.4, 8.4.0 to 8.4.2, 8.5.0; com.capacitorjs:core (Maven) ECOSYSTEM:introduced=6.0.0,fixed=6.2.2; @capacitor/android (npm) SEMVER:introduced=6.0.0,fixed=6.2.2; @capacitor/ios (npm) SEMVER:introduced=6.0.0,fixed=6.2.2; and 1 more.

**Is there a fix for CVE-2026-103922?** Yes. com.capacitorjs:core (Maven): upgrade to 6.2.2 or later; @capacitor/android (npm): upgrade to 6.2.2 or later; @capacitor/ios (npm): upgrade to 6.2.2 or later; github.com/ionic-team/capacitor-swift-pm (Swift): upgrade to 6.2.2 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-103922 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-103922?** Check whether you run Ionic Capacitor, com.capacitorjs:core (Maven), @capacitor/android (npm) or one of the others listed 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.

## How to fix

- com.capacitorjs:core (Maven): upgrade to 6.2.2 or later

  ```sh
  # set com.capacitorjs:core to 6.2.2 in your pom.xml or build.gradle
  ```

- @capacitor/android (npm): upgrade to 6.2.2 or later

  ```sh
  npm install @capacitor/android@6.2.2
  ```

- @capacitor/ios (npm): upgrade to 6.2.2 or later

  ```sh
  npm install @capacitor/ios@6.2.2
  ```

- github.com/ionic-team/capacitor-swift-pm (Swift): upgrade to 6.2.2 or later

## Technical details

The vulnerability exists in the WebView navigation guard which validates a target URL's host and scheme but fails to validate the path component. An attacker can craft a URL that navigates a frame to the internal /_capacitor_http_interceptor_ proxy endpoint, allowing the native proxy to fetch an attacker-controlled URL and return the response as a document at the application's origin. This grants injected script access to same-origin storage, cookies, and Capacitor plugin capabilities. The issue persists even when CapacitorHttp is disabled.

## Affected products

- Ionic Capacitor 6.0.0 to 6.2.1, 7.0.0 to 7.6.8, 8.0.0 to 8.3.4, 8.4.0 to 8.4.2, 8.5.0

## Identifiers

- CVE-2026-103922
- GHSA-rvm3-566m-v7fv

## Timeline

- 2026-10-01: disclosed

## References

- [https://github.com/ionic-team/capacitor/commit/430356a91e1419fc66862dc09835081aa501677e](https://github.com/ionic-team/capacitor/commit/430356a91e1419fc66862dc09835081aa501677e)
- [https://github.com/ionic-team/capacitor/commit/80b6c5e81d062e1e158914040f49e044d95b7ccb](https://github.com/ionic-team/capacitor/commit/80b6c5e81d062e1e158914040f49e044d95b7ccb)