9.3

CVE-2026-103922: @capacitor android Origin Validation Error

CVSS: 9.3v3.1CriticalAwaiting analysis
AliasesGHSA-rvm3-566m-v7fv
Published 01-10-2026Last modified 01-10-2026
Open JSON

Vulnerability summary

CVE-2026-103922 is a critical (CVSS 9.3) Origin Validation Error vulnerability in @capacitor android. EPSS estimates a 0.21% chance of exploitation in the next 30 days, higher than 10.9% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.3/10
010
Critical · v3.1 (CVE.org)
EPSS score
0.21%
0%100%
Low · Change unavailable
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 01-10-2026
    PublishedVulnerability first disclosed.
  2. 01-10-2026
    Last modifiedVulnerability information updated.

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 metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.21%

Chance of exploitation in the next 30 days

Percentile

11%

Versus all other CVEs

30-day change

Change unavailable

Change unavailable

02-10-202620-10-2026
EPSS score
0.21%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

@capacitor4 products
  • android≥ 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
  • ios≥ 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
  • android≥ 6.0.0, < 6.2.2 | ≥ 7.0.0, < 7.6.9 | ≥ 8.5.0, < 8.5.1 | ≥ 8.3.5, < 8.4.3 | ≥ 8.0.0, ≤ 8.3.4
  • ios≥ 6.0.0, < 6.2.2 | ≥ 7.0.0, < 7.6.9 | ≥ 8.5.0, < 8.5.1 | ≥ 8.3.5, < 8.4.3 | ≥ 8.0.0, ≤ 8.3.4
Com.capacitorjs2 products
  • core≥ 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
  • core≥ 6.0.0, < 6.2.2 | ≥ 7.0.0, < 7.6.9 | ≥ 8.5.0, < 8.5.1 | ≥ 8.3.5, < 8.4.3 | ≥ 8.0.0, ≤ 8.3.4
Github.com/ionic-team1 product
  • capacitor-swift-pm≥ 6.0.0, < 6.2.2 | ≥ 7.0.0, < 7.6.9 | ≥ 8.5.0, < 8.5.1 | ≥ 8.3.5, < 8.4.3 | ≥ 8.0.0, ≤ 8.3.4
Ionic-team1 product
  • capacitor≥ 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
Swift1 product

5 vendors · 9 products

References

11 links
Show all 11 references