CVE-2026-13889

Cross‑Origin Leakage via WebAuthentication in Chrome iOS

Published Jun 30, 2026 CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
Description
Side-channel information leakage in WebAuthentication in Google Chrome on iOS prior to 150.0.7871.47 allowed a remote attacker to leak cross-origin data via a crafted HTML page. (Chromium security severity: Medium)

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DLA Debian DLA DLA-4672-1 chromium security update
Debian DSA Debian DSA DSA-6378-1 chromium security update
History
Type Values Removed Values Added
Title Cross‑Origin Leakage via WebAuthentication in Chrome iOS
Type Values Removed Values Added
Title Side‑Channel Leakage in Chrome iOS WebAuthentication Allows Cross‑Origin Data Exfiltration
Type Values Removed Values Added
Title Side‑Channel Leakage in Chrome iOS WebAuthentication Allows Cross‑Origin Data Exfiltration
Type Values Removed Values Added
Title Information Leakage via WebAuthentication Side-Channel in Chrome on iOS
Type Values Removed Values Added
Title Information Leakage via WebAuthentication Side-Channel in Chrome on iOS
Type Values Removed Values Added
Title Cross‑origin Data Leakage via WebAuthentication in Chrome for iOS
Type Values Removed Values Added
Title Cross‑origin Data Leakage via WebAuthentication in Chrome for iOS
Type Values Removed Values Added
Title Cross‑origin data leakage via WebAuthentication in Chrome on iOS
Type Values Removed Values Added
Title Cross‑origin data leakage via WebAuthentication in Chrome on iOS
Type Values Removed Values Added
Title Cross‑Origin Data Leakage via WebAuthentication Side‑Channel in Chrome iOS
Type Values Removed Values Added
Title Cross‑Origin Data Leakage via WebAuthentication Side‑Channel in Chrome iOS
Type Values Removed Values Added
Title Cross‑Origin Data Leakage through WebAuthentication in Chrome on iOS
Type Values Removed Values Added
Title Cross‑Origin Data Leakage through WebAuthentication in Chrome on iOS
Type Values Removed Values Added
Title Side-Channel Information Leakage via WebAuthentication on iOS
Type Values Removed Values Added
Title Side-Channel Information Leakage via WebAuthentication on iOS
Type Values Removed Values Added
Title Chrome WebAuthentication Side-Channel Leak on iOS
Type Values Removed Values Added
Title Chrome WebAuthentication Side-Channel Leak on iOS
Type Values Removed Values Added
Title Side-Channel Leakage of Cross-Origin Data via WebAuthentication in Chrome on iOS
Type Values Removed Values Added
Title Side-Channel Leakage of Cross-Origin Data via WebAuthentication in Chrome on iOS
Type Values Removed Values Added
Title Chrome iOS WebAuthentication Side‑Channel Information Leak
Type Values Removed Values Added
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Google
Google chrome
Vendors & Products Google
Google chrome
Type Values Removed Values Added
Title Chrome iOS WebAuthentication Side‑Channel Information Leak
Type Values Removed Values Added
Description Side-channel information leakage in WebAuthentication in Google Chrome on iOS prior to 150.0.7871.47 allowed a remote attacker to leak cross-origin data via a crafted HTML page. (Chromium security severity: Medium)
Weaknesses CWE-20
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
Chrome
Published
Updated
Jul 1, 2026, 7:04 PM
Reserved
Jun 29, 2026, 11:03 PM
Status
Analyzed
Published
Jun 30, 2026, 11:17 PM
Modified
Oct 25, 2026, 9:10 PM