# CVE-2026-103922 — @capacitor android

> As of 2026-10-01, CVE-2026-103922 is a CRITICAL-severity vulnerability in @capacitor android, CVSS v3.1 9.3, EPSS 0.2% (10.5th percentile). Threadlinqs Intelligence links 1 tracked threat campaign to CVE-2026-103922, most recently “Critical Capacitor WebView Navigation Guard Bypass Lets Malicious Links Access App Data and Native Features (CVE-2026-103922)”.

**Last updated:** 2026-10-01

## 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.

The record classifies CVE-2026-103922 under weakness classes [CWE-346](https://intel.threadlinqs.com/cwe/CWE-346), [CWE-441](https://intel.threadlinqs.com/cwe/CWE-441). Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs no prior authentication, needs a user to take an action first, and has high impact on confidentiality, integrity. 5 affected-product entries are recorded, across 4 vendors, listed below. The identifier was first published 4 days ago.

## Severity and exploitation probability

- **CVSS v3.1 base score:** 9.3 — CRITICAL (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N`)
- **EPSS (FIRST):** 0.2% probability of exploitation in the next 30 days, higher than 10.5% of all scored CVEs
- **CISA KEV:** Not listed in the CISA Known Exploited Vulnerabilities catalog
- **Threadlinqs priority:** 7.1/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- **Published:** 2026-10-01

## Is CVE-2026-103922 being exploited?

Weaponised exploit code for CVE-2026-103922 is publicly available. 1 public proof-of-concept repository is tracked for this identifier.

- [techupdate24/capacitor-flaw-cve-2026-103922](https://github.com/techupdate24/capacitor-flaw-cve-2026-103922) (github)

## Affected products and versions

- **ionic-team**: capacitor
- **@capacitor**: android, ios
- **com.capacitorjs**: core
- **swift**: github.com/ionic-team/capacitor-swift-pm

## How to fix CVE-2026-103922

No vendor patch reference has been recorded for CVE-2026-103922 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.

## Threat activity tracking CVE-2026-103922

1 tracked threat in the Threadlinqs corpus references CVE-2026-103922, either in the campaign’s CVE list or as an indicator on the campaign record.

- [Critical Capacitor WebView Navigation Guard Bypass Lets Malicious Links Access App Data and Native Features (CVE-2026-103922)](https://intel.threadlinqs.com/threat/TL-2026-2894) — CRITICAL · 2026-10-04

## Sources

Enriched from CVE.org, NVD, FIRST EPSS, public proof-of-concept repositories. Last verified by Threadlinqs on 2026-10-04. This product uses the NVD API but is not endorsed or certified by the NVD.

**Vendor advisory and patch**

- [github.com](https://github.com/ionic-team/capacitor/security/advisories/GHSA-rvm3-566m-v7fv)

**Other references**

- [github.com](https://github.com/ionic-team/capacitor/commit/430356a91e1419fc66862dc09835081aa501677e)
- [github.com (80b6c5e81d062e1e158914040f49e044d95b7ccb)](https://github.com/ionic-team/capacitor/commit/80b6c5e81d062e1e158914040f49e044d95b7ccb)
- [github.com (85ccc44151fdd5ae5e0d806d875766ef4b84ad5d)](https://github.com/ionic-team/capacitor/commit/85ccc44151fdd5ae5e0d806d875766ef4b84ad5d)
- [github.com (af9a287fef45f0ac68ce640cb42fed2d06b0f1b4)](https://github.com/ionic-team/capacitor/commit/af9a287fef45f0ac68ce640cb42fed2d06b0f1b4)
- [github.com (d5e3170ba0ff155fc542b7e6d16cff5201406540)](https://github.com/ionic-team/capacitor/commit/d5e3170ba0ff155fc542b7e6d16cff5201406540)

_Showing 6 of 8 recorded references._

Canonical: https://intel.threadlinqs.com/cve/CVE-2026-103922
Full detection coverage and IOCs for threats exploiting CVE-2026-103922 via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp