{"id":"CVE-2026-103922","published":"2026-10-01T18:17:12.840","lastModified":"2026-10-02T18:44:11.270","description":"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.","cvssScore":9.3,"cvssSeverity":"CRITICAL","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N","cwes":["CWE-346","CWE-441"],"vendors":[],"products":[],"references":[{"url":"https://github.com/ionic-team/capacitor/commit/430356a91e1419fc66862dc09835081aa501677e","tags":[]},{"url":"https://github.com/ionic-team/capacitor/commit/80b6c5e81d062e1e158914040f49e044d95b7ccb","tags":[]},{"url":"https://github.com/ionic-team/capacitor/commit/85ccc44151fdd5ae5e0d806d875766ef4b84ad5d","tags":[]},{"url":"https://github.com/ionic-team/capacitor/commit/af9a287fef45f0ac68ce640cb42fed2d06b0f1b4","tags":[]},{"url":"https://github.com/ionic-team/capacitor/commit/d5e3170ba0ff155fc542b7e6d16cff5201406540","tags":[]},{"url":"https://github.com/ionic-team/capacitor/commit/ee586ae680887ba99d066616f976db149542d922","tags":[]},{"url":"https://github.com/ionic-team/capacitor/releases/tag/8.5.1","tags":[]},{"url":"https://github.com/ionic-team/capacitor/security/advisories/GHSA-rvm3-566m-v7fv","tags":[]}],"exploitRefs":[{"url":"https://github.com/ionic-team/capacitor/commit/430356a91e1419fc66862dc09835081aa501677e","tags":[]},{"url":"https://github.com/ionic-team/capacitor/commit/80b6c5e81d062e1e158914040f49e044d95b7ccb","tags":[]},{"url":"https://github.com/ionic-team/capacitor/commit/85ccc44151fdd5ae5e0d806d875766ef4b84ad5d","tags":[]},{"url":"https://github.com/ionic-team/capacitor/commit/af9a287fef45f0ac68ce640cb42fed2d06b0f1b4","tags":[]},{"url":"https://github.com/ionic-team/capacitor/commit/d5e3170ba0ff155fc542b7e6d16cff5201406540","tags":[]},{"url":"https://github.com/ionic-team/capacitor/commit/ee586ae680887ba99d066616f976db149542d922","tags":[]},{"url":"https://github.com/ionic-team/capacitor/releases/tag/8.5.1","tags":[]},{"url":"https://github.com/ionic-team/capacitor/security/advisories/GHSA-rvm3-566m-v7fv","tags":[]}],"hasPoc":true,"ai":{"summary":"This flaw allows an attacker to navigate a frame to a specific path, enabling the proxy to fetch an attacker-selected URL and access same-origin storage and cookies, posing a significant risk to application security.","exploitability":"Exploitation is relatively straightforward once an untrusted link is activated, requiring the victim to click on the link.","blast_radius":"If exploited, the attacker can access sensitive data and execute scripts within the application’s origin, leading to potential data breaches and unauthorized actions.","remediation":"Upgrade to Capacitor version 6.2.2, 7.6.9, 8.3.5, 8.4.3, or 8.5.1.","detection":"No reliable host or network indicator is derivable from the published description.","tags":["web","rce","storage-access","cookie-access"],"model":"qwen2.5:7b-instruct","analyzedAt":"2026-10-02T08:46:15.099Z"}}