---
title: "CVE-2026-103922: Capacitor - Stored XSS"
description: "Capacitor 6.0.0 to 6.2.2, 7.6.9, 8.3.5, 8.4.3, and 8.5.1 contain a stored XSS caused by insufficient validation of WebView navigation guard path, letting attackers execute scripts with same-origin access, exploit requires victim to activate an untrusted link."
url: https://panop.io/threat-heartbeat/CVE-2026-103922/
---

# CVE-2026-103922 Capacitor - Stored XSS

Capacitor 6.0.0 to 6.2.2, 7.6.9, 8.3.5, 8.4.3, and 8.5.1 contain a stored XSS caused by insufficient validation of WebView navigation guard path, letting attackers execute scripts with same-origin access, exploit requires victim to activate an untrusted link.

CVSS base score 9.3 /10

Critical

CISA KEV

Not listed

Public exploit

Proof of concept available

Authentication

Not required

EPSS

0.21% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-103922)

## Details

Type

Stored XSS

Impact

Client Script Exec, Information Disclosure

CVSS vector

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

Published

1 October 2026

Updated

15 October 2026

Weakness

[CWE-346](https://cwe.mitre.org/data/definitions/346.html)

## Vendor fix

Update to versions 6.2.2, 7.6.9, 8.3.5, 8.4.3, or 8.5.1.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-103922](https://nvd.nist.gov/vuln/detail/CVE-2026-103922)
- [https://github.com/ionic-team/capacitor/commit/80b6c5e81d062e1e158914040f49e044d95b7ccb](https://github.com/ionic-team/capacitor/commit/80b6c5e81d062e1e158914040f49e044d95b7ccb)
- [https://github.com/ionic-team/capacitor/commit/85ccc44151fdd5ae5e0d806d875766ef4b84ad5d](https://github.com/ionic-team/capacitor/commit/85ccc44151fdd5ae5e0d806d875766ef4b84ad5d)
- [https://github.com/ionic-team/capacitor/commit/af9a287fef45f0ac68ce640cb42fed2d06b0f1b4](https://github.com/ionic-team/capacitor/commit/af9a287fef45f0ac68ce640cb42fed2d06b0f1b4)
- [https://github.com/ionic-team/capacitor/commit/d5e3170ba0ff155fc542b7e6d16cff5201406540](https://github.com/ionic-team/capacitor/commit/d5e3170ba0ff155fc542b7e6d16cff5201406540)
- [https://github.com/ionic-team/capacitor/commit/ee586ae680887ba99d066616f976db149542d922](https://github.com/ionic-team/capacitor/commit/ee586ae680887ba99d066616f976db149542d922)
- [https://github.com/ionic-team/capacitor/releases/tag/8.5.1](https://github.com/ionic-team/capacitor/releases/tag/8.5.1)
- [https://github.com/ionic-team/capacitor/security/advisories/GHSA-rvm3-566m-v7fv](https://github.com/ionic-team/capacitor/security/advisories/GHSA-rvm3-566m-v7fv)
- [https://github.com/ionic-team/capacitor/commit/430356a91e1419fc66862dc09835081aa501677e](https://github.com/ionic-team/capacitor/commit/430356a91e1419fc66862dc09835081aa501677e)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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