CVE-2026-103922: @capacitor Android

Critical severity, CVSS 9.3. EPSS: 0.2% chance of exploitation in the next 30 days.

Capacitor is a cross-platform native runtime for web applications. From 6.0.0 until 6.2.2, 7.6.9, 8.3.5, 8.4.3, and 8.5.1, the Android and iOS WebView navigation guard validates a target URL's host and scheme but not its path, allowing a victim who activates an untrusted link to navigate a frame to /_capacitor_http_interceptor_. The native proxy can fetch an attacker-selected URL and return the response as a document at the application's own origin, allowing script in that response to access same-origin storage, cookies, and registered Capacitor plugin capabilities. Applications remain affected when CapacitorHttp is disabled because affected releases serve the proxy path regardless of that setting. This issue is fixed in versions 6.2.2, 7.6.9, 8.3.5, 8.4.3, and 8.5.1.

Affected products

  • @capacitor Android: from 8.5.0, before 8.5.1 (fixed in 8.5.1); from 8.3.5, before 8.4.3 (fixed in 8.4.3); from 8.0.0, before 8.3.5 (fixed in 8.3.5); from 7.0.0, before 7.6.9 (fixed in 7.6.9); from 6.0.0, before 6.2.2 (fixed in 6.2.2)
  • @capacitor IOS: from 8.5.0, before 8.5.1 (fixed in 8.5.1); from 8.3.5, before 8.4.3 (fixed in 8.4.3); from 8.0.0, before 8.3.5 (fixed in 8.3.5); from 7.0.0, before 7.6.9 (fixed in 7.6.9); from 6.0.0, before 6.2.2 (fixed in 6.2.2)
  • Com.capacitorjs Core: from 8.5.0, before 8.5.1 (fixed in 8.5.1); from 8.3.5, before 8.4.3 (fixed in 8.4.3); from 8.0.0, before 8.3.5 (fixed in 8.3.5); from 7.0.0, before 7.6.9 (fixed in 7.6.9); from 6.0.0, before 6.2.2 (fixed in 6.2.2)
  • Ionic-Team Capacitor: from 6.0.0, before 6.2.2 (fixed in 6.2.2); from 7.0.0, before 7.6.9 (fixed in 7.6.9); from 8.0.0, before 8.3.5 (fixed in 8.3.5); from 8.3.5, before 8.4.3 (fixed in 8.4.3); from 8.5.0, before 8.5.1 (fixed in 8.5.1)
  • Swift Github.com/ionic-Team/capacitor-Swift-Pm: from 8.5.0, before 8.5.1 (fixed in 8.5.1); from 8.3.5, before 8.4.3 (fixed in 8.4.3); from 8.0.0, before 8.3.5 (fixed in 8.3.5); from 7.0.0, before 7.6.9 (fixed in 7.6.9); from 6.0.0, before 6.2.2 (fixed in 6.2.2)

Published 2026-10-01. Last modified 2026-10-02.