EUVD-2026-40734
GHSA-f4wc-qc7x-8g92
Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
Network-delivered attack with no attacker privileges needed; mandatory extension-install interaction captured by UI:R; CSP bypass yields integrity-only, limited impact with no scope change.
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 Extensions in Google Chrome prior to 150.0.7871.47 allowed an attacker who convinced a user to install a malicious extension to bypass content security policy via a crafted Chrome Extension. (Chromium security severity: Low)
AnalysisAI
Content Security Policy bypass in Google Chrome's Extensions subsystem prior to version 150.0.7871.47 allows an attacker who socially engineers a victim into installing a crafted malicious extension to circumvent CSP protections, yielding limited integrity impact. CVSS UI:R and EPSS at 0.12% (2nd percentile) confirm this is a low-probability, user-interaction-dependent attack 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 install a crafted malicious Chrome Extension onto a vulnerable Chrome instance (prior to 150.0.7871.47) - this installation step is the essential prerequisite and represents the primary limiting factor. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 vector AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N yields a Medium-range score of 4.3, but several signals collectively deflate real-world priority. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker crafts a Chrome Extension with a malicious manifest or background script designed to exploit the insufficient CSP enforcement in vulnerable Chrome versions, then distributes it via a phishing email or a fake Web Store listing convincing the target to install it. Once installed, the extension operates within the browser and bypasses CSP rules on pages the victim visits, allowing it to inject or load policy-restricted scripts or cross-origin resources. … |
| Remediation | Update Google Chrome to version 150.0.7871.47 or later; this is the vendor-released patch for this vulnerability, announced in the Chrome stable channel update 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 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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