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CVE-2026-103922

CRITICALCVSS 9.3/10

Last modified

CVE-2026-103922 is a critical-severity vulnerability rated 9.3/10 on the CVSS scale. 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_.

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.

Metrics

CVSS 3.1
9.3/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N

Weakness Enumeration

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
ionic-teamcapacitor>= 6.0.0, < 6.2.2; >= 7.0.0, < 7.6.9; >= 8.0.0, < 8.3.5; >= 8.3.5, < 8.4.3; >= 8.5.0, < 8.5.1
@capacitorandroid>= 8.5.0, < 8.5.1; >= 8.3.5, < 8.4.3; >= 8.0.0, < 8.3.5; >= 7.0.0, < 7.6.9; >= 6.0.0, < 6.2.2
@capacitorios>= 8.5.0, < 8.5.1; >= 8.3.5, < 8.4.3; >= 8.0.0, < 8.3.5; >= 7.0.0, < 7.6.9; >= 6.0.0, < 6.2.2
com.capacitorjscore>= 8.5.0, < 8.5.1; >= 8.3.5, < 8.4.3; >= 8.0.0, < 8.3.5; >= 7.0.0, < 7.6.9; >= 6.0.0, < 6.2.2
swiftgithub.com/ionic-team/capacitor-swift-pm>= 8.5.0, < 8.5.1; >= 8.3.5, < 8.4.3; >= 8.0.0, < 8.3.5; >= 7.0.0, < 7.6.9; >= 6.0.0, < 6.2.2

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-103922?
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.
How severe is CVE-2026-103922?
CVE-2026-103922 has a CVSS score of 9.3/10 (CRITICAL severity).
How do I fix CVE-2026-103922?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST