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CVE-2026-103922

9.3 CRITICALpublic exploit available

Published 2026-10-01 · Updated 2026-10-02

AI risk analysis

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.
Detection
No reliable host or network indicator is derivable from the published description.
Prioritized remediation
Upgrade to Capacitor version 6.2.2, 7.6.9, 8.3.5, 8.4.3, or 8.5.1.
webrcestorage-accesscookie-access

Analysis generated locally by qwen2.5:7b-instruct (no data left the box). AI-assisted — verify against primary sources before acting.

NVD 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.

CVSS vector

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

Weaknesses

CWE-346, CWE-441

Public exploit & PoC references

All references

Source data: NVD (nvd.nist.gov), public domain. Exploit-DB.ai adds local AI analysis for defensive use only.

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