What is the CVSS score of EUVD-2026-74378?

EUVD-2026-74378 has a CVSS 3.1 base score of 4.3 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N. EPSS exploitation probability: 0.2%.

Is there a patch available for EUVD-2026-74378?

Yes, a patch is available for EUVD-2026-74378. Update the affected software to the latest version immediately.

Google Chrome EUVD-2026-74378

| CVE-2026-87574 MEDIUM

Information Exposure (CWE-200)

2026-09-09 Chrome

GHSA-c4hv-pjg2-qwqx

Information Disclosure Google

4.3

CVSS 3.1 · Vendor: Chrome

Severity by source

Vendor (Chrome) PRIMARY

4.3 MEDIUM

AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

vuln.today AI

4.3 MEDIUM

Network-delivered via crafted HTML requiring victim interaction (UI:R); cross-origin data disclosure is partial (C:L) with no integrity or availability impact.

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

4.0 AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (Chrome).

CVSS VectorVendor: Chrome

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

None

Lifecycle Timeline

Analysis Generated

Sep 09, 2026 - 16:48 vuln.today

Patch available

Sep 09, 2026 - 01:03 EUVD

CVE Published

Sep 09, 2026 - 00:09 cve.org

MEDIUM 4.3

CVE Published

Sep 09, 2026 - 00:09 cve.org

UNKNOWN (no severity yet)

DescriptionCVE.org

Information leak in ServiceWorker in Google Chrome prior to 153.0.8010.36 allowed a remote attacker to obtain cross-origin data via a crafted HTML page. (Chromium security severity: Medium)

AnalysisAI

Cross-origin data leakage via Google Chrome's ServiceWorker implementation allows remote attackers to obtain information from other origins by serving a crafted HTML page to a victim. Affected versions are all Chrome releases prior to 153.0.8010.36 across desktop platforms. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

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Vulnerability AssessmentAI

Exploitation	The victim must actively visit an attacker-controlled or attacker-influenced HTML page (UI:R); exploitation cannot occur passively without this interaction. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment	The CVSS 4.3 score (AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N) accurately reflects the bounded nature of this vulnerability: exploitation requires user interaction with a crafted page, and the confidentiality impact is partial. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario	Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation	Update Google Chrome to version 153.0.8010.36 or later, available via the Chrome stable channel update at https://chromereleases.googleblog.com/2026/09/stable-channel-update-for-desktop_0808145027.html. … Detailed patch versions, workarounds, and compensating controls in full report.