EUVD-2026-40575
GHSA-3837-hmfh-32c2
Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Network-delivered via crafted page requiring active user navigation; cross-origin data inference yields high confidentiality loss with no integrity or availability impact.
Primary rating from Vendor (google).
CVSS VectorVendor: google
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Lifecycle Timeline
4DescriptionCVE.org
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)
AnalysisAI
Side-channel information leakage in WebAuthentication within Google Chrome on iOS (versions prior to 150.0.7871.47) enables a remote attacker to infer cross-origin data by directing a victim to a crafted HTML page. The CVSS vector (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N) confirms network-exploitable impact with high confidentiality loss, constrained by mandatory user interaction and scoped exclusively to the iOS platform. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires the victim to be using Google Chrome on iOS at a version prior to 150.0.7871.47 - the flaw is not confirmed on Chrome for other platforms or on Safari/Firefox on iOS. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 6.5 medium score is internally consistent with the vector: network-reachable with no authentication requirement, low complexity, but user interaction required and scope unchanged. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker publishes a crafted HTML page and lures an iOS Chrome user to it via phishing, a malicious advertisement, or a compromised link. The page silently invokes the WebAuthentication API in a manner that produces observable side-channel differences - such as timing variations - correlated with authentication state or data belonging to a victim-controlled origin. … |
| Remediation | Update Google Chrome on iOS to version 150.0.7871.47 or later - this is the vendor-released patch per the Google Chrome stable channel advisory at http://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop_0175352312.html. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-20 – Improper Input Validation
View allSame technique Information Disclosure
View allVendor StatusVendor
SUSE
Severity: Moderate| Product | Status |
|---|---|
| SUSE Package Hub 15 SP7 | Fixed |
| openSUSE Tumbleweed | Fixed |
| SUSE Package Hub 15 SP7 | Affected |
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External POC / Exploit Code
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