CVE-2026-103922

CRITICALPre-NVD 9.39.3—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.3 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.2% (10th percentile of EPSS-scored CVEs). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
Trending — 3 sources updated this week
9.3EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 9.3Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

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 v3
9.3
EG Score
9.3CRITICALmedium confidence
EG Risk
42
EG Risk 42/100CISA SSVC

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity93% × 45%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.2%
EPSS %ILE
10th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

October 1, 2026

Last Modified

October 2, 2026

Advisory Details (8)

Auto-updated Oct 2, 2026
Patch available. Sources: github_commit, github_release, github.
github Patch Available

Capacitor Android and iOS: remote content can be loaded at the app origin via the internal HTTP proxy path · Advisory · ionic-team/capacitor · GitHub

https://github.com/ionic-team/capacitor/security/advisories/GHSA-rvm3-566m-v7fv
github_release Patch Available

8.5.1

Patch available: ionic-team/capacitor 8.5.1

https://github.com/ionic-team/capacitor/releases/tag/8.5.1
github_commit Patch Available

commit ee586ae68088 (ionic-team/capacitor)

Patch available: ionic-team/capacitor 8.5.1 (contains commit ee586ae68088)

https://github.com/ionic-team/capacitor/commit/ee586ae680887ba99d066616f976db149542d922
github_commit Patch Available

commit d5e3170ba0ff (ionic-team/capacitor)

Patch available: ionic-team/capacitor 6.2.2 (contains commit d5e3170ba0ff)

https://github.com/ionic-team/capacitor/commit/d5e3170ba0ff155fc542b7e6d16cff5201406540
github_commit Patch Available

commit af9a287fef45 (ionic-team/capacitor)

Patch available: ionic-team/capacitor 8.4.3 (contains commit af9a287fef45)

https://github.com/ionic-team/capacitor/commit/af9a287fef45f0ac68ce640cb42fed2d06b0f1b4
github_commit Patch Available

commit 85ccc44151fd (ionic-team/capacitor)

Patch available: ionic-team/capacitor 6.2.2 (contains commit 85ccc44151fd)

https://github.com/ionic-team/capacitor/commit/85ccc44151fdd5ae5e0d806d875766ef4b84ad5d
github_commit Patch Available

commit 80b6c5e81d06 (ionic-team/capacitor)

Patch available: ionic-team/capacitor 7.6.9 (contains commit 80b6c5e81d06)

https://github.com/ionic-team/capacitor/commit/80b6c5e81d062e1e158914040f49e044d95b7ccb
github_commit Patch Available

commit 430356a91e14 (ionic-team/capacitor)

Patch available: ionic-team/capacitor 7.6.9 (contains commit 430356a91e14)

https://github.com/ionic-team/capacitor/commit/430356a91e1419fc66862dc09835081aa501677e

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 7× in last 7d / 7× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-10-03 17:44 UTCEG score recompute
  2. 2026-10-03 14:25 UTCEPSS rescore
  3. 2026-10-02 18:51 UTCEG score recompute
  4. 2026-10-01 19:22 UTCEG score recompute
  5. 2026-10-01 18:22 UTCEG score recompute
  6. 2026-10-01 17:39 UTCEG score recompute
  7. 2026-10-01 17:35 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-103922?
CVE-2026-103922 is a critical vulnerability published on October 1, 2026. 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…
When was CVE-2026-103922 disclosed?
CVE-2026-103922 was first published on October 1, 2026, with the most recent update on October 2, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-103922 actively exploited?
CVE-2026-103922 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (10th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-103922?
CVE-2026-103922 has a CVSS base score of 9.3 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-103922?
A fix for CVE-2026-103922 is available: update to the fixed version the vendor names in its advisory.

Dependency Blast Radius

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