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CVE

CVE-2026-103922

Capacitor Android and iOS: remote content can be loaded at the app origin via the internal HTTP proxy path
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CVE

CVE-2026-103922

Capacitor Android and iOS: remote content can be loaded at the app origin via the internal HTTP proxy path

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 /capacitorhttpinterceptor. 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.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
9.3
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N
C
H
U
0
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N
C
H
U
-

Related Resources

No items found.

References

https://github.com/ionic-team/capacitor/releases/tag/8.5.1, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/103xxx/CVE-2026-103922.json, https://github.com/ionic-team/capacitor/security/advisories/GHSA-rvm3-566m-v7fv, https://nvd.nist.gov/vuln/detail/CVE-2026-103922, https://github.com/ionic-team/capacitor/commit/430356a91e1419fc66862dc09835081aa501677e, https://github.com/ionic-team/capacitor/commit/80b6c5e81d062e1e158914040f49e044d95b7ccb, https://github.com/ionic-team/capacitor/commit/85ccc44151fdd5ae5e0d806d875766ef4b84ad5d, https://github.com/ionic-team/capacitor/commit/af9a287fef45f0ac68ce640cb42fed2d06b0f1b4, https://github.com/ionic-team/capacitor/commit/d5e3170ba0ff155fc542b7e6d16cff5201406540, https://github.com/ionic-team/capacitor/commit/ee586ae680887ba99d066616f976db149542d922

Severity

9.3

CVSS Score
0
10

Basic Information

Base CVSS
9.3
EPSS Probability
0.0034%
EPSS Percentile
0.27176%
Introduced Version
3ab4139bd0b8863cadcb175180ea941f4c244f08
Fix Available
ee586ae680887ba99d066616f976db149542d922

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