EUVD-2026-66063
GHSA-cv9p-rf29-ph58
Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
Network delivery via crafted page, no attacker privileges, requires user to visit the page (UI:R), integrity-only impact with no scope change.
Primary rating from Vendor (Chrome).
CVSS VectorVendor: Chrome
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
Lifecycle Timeline
4DescriptionCVE.org
Improper input validation in ReaderMode in Google Chrome prior to 152.0.7977.65 allowed a remote attacker leveraging social engineering to bypass web origin policy into a privileged page via a crafted HTML page. (Chromium security severity: Low)
AnalysisAI
Web origin policy bypass in Google Chrome's ReaderMode feature prior to version 152.0.7977.65 allows a remote attacker to inject content into a privileged browser page context via a crafted HTML page, requiring social engineering to achieve user interaction. The CVSS vector (AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N) limits impact to integrity only, with no confidentiality or availability consequences. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The victim must be running Google Chrome prior to version 152.0.7977.65. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.3 Medium rating reflects a genuinely constrained vulnerability: network-reachable (AV:N), low complexity (AC:L), no attacker privileges required (PR:N), but requiring explicit user interaction (UI:R) and producing only limited integrity impact (I:L) with unchanged scope and no confidentiality or availability effect. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker crafts a malicious HTML page that triggers Chrome's ReaderMode input validation flaw and distributes it via phishing email or a compromised link, relying on social engineering to persuade a target running an unpatched Chrome version to open it. Upon visiting the page, the crafted content bypasses the web origin policy, allowing injection of attacker-controlled material into the privileged ReaderMode context. … |
| Remediation | Update Google Chrome to version 152.0.7977.65 or later, which contains the vendor-released patch for this issue. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-20 – Improper Input Validation
View allSame technique Authentication Bypass
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External POC / Exploit Code
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