EUVD-2026-40739
GHSA-qfv7-g547-v6hg
Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
Attacker serves a crafted HTML page (AV:N, PR:N), victim must navigate to it (UI:R), impact is limited integrity bypass within the browser sandbox (I:L, C:N, A:N, S:U).
Primary rating from Vendor (google).
CVSS VectorVendor: google
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
Lifecycle Timeline
4DescriptionCVE.org
Insufficient policy enforcement in FileSystem in Google Chrome prior to 150.0.7871.47 allowed a remote attacker to bypass discretionary access control via a crafted HTML page. (Chromium security severity: Low)
AnalysisAI
FileSystem policy enforcement bypass in Google Chrome prior to version 150.0.7871.47 allows a remote attacker to circumvent discretionary access control via a crafted HTML page, resulting in limited unauthorized write operations within the browser's sandboxed filesystem scope. The vulnerability requires user interaction - the victim must navigate to a malicious page - and produces only an integrity impact (I:L) with no confidentiality or availability consequence. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires the victim to actively navigate to a crafted HTML page hosted by the attacker (UI:R per CVSS vector) - passive exposure such as receiving an email or seeing an ad is insufficient without a click-through to the malicious URL. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 base score of 4.3 (AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N) reflects a low-complexity network-reachable flaw that nonetheless requires victim interaction and delivers only a limited integrity impact - no confidentiality or availability consequence, and scope remains unchanged within the browser sandbox. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker registers a malicious domain and serves a crafted HTML page that leverages the FileSystem API policy gap to write data outside the origin's normally authorized sandbox scope. The attacker then conducts a phishing or malvertising campaign to lure Chrome users into visiting the page, triggering the access control bypass upon page load with no further interaction required beyond navigation. … |
| Remediation | The primary fix is upgrading Google Chrome to version 150.0.7871.47 or later via Chrome's built-in update mechanism or through enterprise management tooling; the stable channel advisory is 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-284 – Improper Access Control
View allSame technique Authentication Bypass
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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