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CVE-2026-103922

9.3 · CRITICAL

Capacitor is a cross-platform native runtime for web applications.

Published Oct 1, 2026CWE-346EPSS 0.34%

Overview

CVE-2026-103922 is a critical-severity vulnerability. It was published on October 1, 2026 and has a CVSS 3.1 base score of 9.3 (CRITICAL).

This vulnerability has a CVSS 3.1 base score of 9.3, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/ionic-team/capacitor/commit/430356a91e1419fc66862dc09835081aa501677eGitHubgithub.com/ionic-team/capacitor/commit/80b6c5e81d062e1e158914040f49e044d95b7ccbGitHubgithub.com/ionic-team/capacitor/commit/85ccc44151fdd5ae5e0d806d875766ef4b84ad5dGitHubgithub.com/ionic-team/capacitor/commit/af9a287fef45f0ac68ce640cb42fed2d06b0f1b4GitHubgithub.com/ionic-team/capacitor/commit/d5e3170ba0ff155fc542b7e6d16cff5201406540GitHubgithub.com/ionic-team/capacitor/commit/ee586ae680887ba99d066616f976db149542d922GitHubgithub.com/ionic-team/capacitor/releases/tag/8.5.1GitHubgithub.com/ionic-team/capacitor/security/advisories/GHSA-rvm3-566m-v7fv

How CyberStrike helps

Frequently asked questions

What is CVE-2026-103922?

CVE-2026-103922 is a critical-severity vulnerability. It was published on October 1, 2026 and has a CVSS 3.1 base score of 9.3 (CRITICAL).

How severe is CVE-2026-103922?

This vulnerability has a CVSS 3.1 base score of 9.3, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-103922?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-103922?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-103922 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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