EUVD-2026-65783
GHSA-84x7-xf96-m92q
Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
Network-delivered via crafted HTML (AV:N, AC:L), requires victim to visit the page (UI:R), yields only limited cross-origin data read (C:L) with no integrity, availability, or scope-change effects.
Primary rating from Vendor (Chrome).
CVSS VectorVendor: Chrome
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
Lifecycle Timeline
4DescriptionCVE.org
Incorrect authorization in Paint in Google Chrome prior to 152.0.7977.65 allowed a remote attacker to potentially bypass web origin policy via a crafted HTML page. (Chromium security severity: High)
AnalysisAI
Incorrect authorization in the Paint component of Google Chrome before version 152.0.7977.65 enables remote unauthenticated attackers to potentially bypass the Same-Origin Policy via a crafted HTML page, resulting in limited cross-origin data exposure. Exploitation requires user interaction - the victim must navigate to the attacker-controlled page - and impact is confined to partial confidentiality loss with no integrity or availability effect. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires the victim to actively visit a crafted HTML page controlled by the attacker (user interaction, UI:R in CVSS) - drive-by exploitation is not possible without this step. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 score of 4.3 (Medium) with vector AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N accurately reflects the bounded nature of this flaw: network-accessible and requiring no attacker authentication, but gated by mandatory user interaction (UI:R) and limited to partial confidentiality impact with no integrity, availability, or scope-change effects. … 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 the incorrect authorization flaw in Chrome's Paint component, causing the browser to bypass same-origin checks for a targeted cross-origin resource. When a victim Chrome user visits the attacker's page - through a phishing link, malvertising, or a compromised third-party site - the page may read limited data from a cross-origin origin that policy should have blocked. … |
| Remediation | Upgrade Google Chrome to version 152.0.7977.65 or later, as confirmed by the stable channel update advisory at chromereleases.googleblog.com/2026/08/stable-channel-update-for-desktop_0256176589.html. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-863 – Incorrect Authorization
View allSame technique Authentication Bypass
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External POC / Exploit Code
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