EUVD-2026-40477
GHSA-8qww-3jh8-g7v3
Severity by source
AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Description requires the victim to install a malicious extension, so UI:R and AC:H; no auth needed (PR:N) and full RCE gives C/I/A:H.
Primary rating from Vendor (google).
CVSS VectorVendor: google
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
4DescriptionCVE.org
Insufficient validation of untrusted input in Downloads in Google Chrome prior to 150.0.7871.47 allowed an attacker who convinced a user to install a malicious extension to execute arbitrary code via a crafted Chrome Extension. (Chromium security severity: High)
AnalysisAI
Arbitrary code execution in Google Chrome desktop before 150.0.7871.47 arises from insufficient input validation in the Downloads component, letting a crafted Chrome extension break out of its intended sandbox constraints. An attacker who first convinces a victim to install a malicious extension can leverage the flaw to run arbitrary code, which Chromium rates High severity. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires the attacker to first get the victim to install a malicious Chrome extension, and then have that extension issue a crafted request through the Downloads component - the specific concrete precondition named in the description. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | Signals are mixed and lean toward moderate real-world priority despite the 8.1 CVSS. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker publishes a plausible-looking Chrome extension (e.g., a productivity or theme add-on) and uses phishing or a fake listing to persuade a target to install it. Once installed, the extension issues a crafted download-related request that the Downloads component fails to validate, triggering arbitrary code execution in the victim's browser context. … |
| Remediation | Vendor-released patch: update Google Chrome to 150.0.7871.47 or later on all desktop platforms; Chrome's built-in auto-update normally delivers this, so trigger a manual update via chrome://settings/help and relaunch to confirm the version, following the Stable channel advisory at https://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop_0175352312.html. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: Inventory current Chrome versions across all endpoints and identify users on versions before 150.0.7871.47. …
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Same weakness CWE-20 – Improper Input Validation
View allVendor StatusVendor
SUSE
Severity: Important| 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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