EUVD-2026-40818
GHSA-9gwh-j3gj-52pq
Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
Renderer compromise prerequisite raises AC to H; UI spoofing yields only C:L/I:L with no availability impact and no scope change.
Primary rating from NVD.
CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
Lifecycle Timeline
4DescriptionNVD
Insufficient validation of untrusted input in WebAppInstalls in Google Chrome prior to 150.0.7871.47 allowed a remote attacker who had compromised the renderer process to perform UI spoofing via a crafted HTML page. (Chromium security severity: Low)
AnalysisAI
UI spoofing in Google Chrome's WebAppInstalls component (prior to 150.0.7871.47) is reachable only after an attacker has already compromised the Chrome renderer process, making this a chained, post-exploitation capability rather than a standalone entry point. With a compromised renderer, the attacker can serve a crafted HTML page that bypasses insufficient input validation in WebAppInstalls to forge Chrome's native UI - potentially deceiving users into trusting malicious web app install prompts or dialogs. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires two distinct preconditions: (1) the attacker must have already achieved code execution within the Chrome renderer process via a separate vulnerability - this is the primary and highest barrier to exploitation; (2) the target user must perform active interaction (UI:R), visiting a crafted HTML page served by the compromised renderer. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | Multiple signals converge on a low real-world priority despite the 5.4 CVSS Medium score. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker first exploits a separate, higher-severity Chrome renderer vulnerability to gain code execution within the sandboxed renderer process. From that compromised renderer, they deliver a crafted HTML page that feeds malicious input into Chrome's WebAppInstalls UI flow, causing Chrome to display a spoofed installation dialog that appears to originate from a trusted source - potentially tricking a user into granting permissions or installing a malicious web app. … |
| Remediation | Upgrade Google Chrome to version 150.0.7871.47 or later; this is confirmed as the vendor-released patched build per 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. |
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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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