EUVD-2026-34641
GHSA-mjw8-q776-q5xr
Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Primary rating from NVD.
CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Lifecycle Timeline
4DescriptionCVE.org
Inappropriate implementation in SVG in Google Chrome prior to 149.0.7827.53 allowed a remote attacker to leak cross-origin data via a crafted HTML page. (Chromium security severity: Medium)
AnalysisAI
Cross-origin data leakage via Google Chrome's SVG implementation (all versions prior to 149.0.7827.53) enables remote unauthenticated attackers to exfiltrate sensitive information from foreign origins by luring a victim to a crafted HTML page. The flaw reflects an inappropriate SVG rendering implementation that fails to enforce cross-origin isolation boundaries, producing a high confidentiality impact with no integrity or availability consequences. EPSS is very low at 0.03% (11th percentile), no public exploit code has been identified, and no CISA KEV listing exists at time of analysis, suggesting limited observed exploitation despite the medium-severity CVSS score.
Technical ContextAI
The vulnerability originates in Chrome's Blink rendering engine, specifically within the SVG (Scalable Vector Graphics) implementation. SVG is an XML-based vector image format whose browser integration interfaces tightly with the Same-Origin Policy (SOP) - the foundational web security mechanism that prevents pages from reading data across different origins. CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor) identifies the root cause class: the SVG subsystem improperly handles some construct - likely involving SVG features such as filters, use-element cross-document references, external resource loading, or timing side-channels - in a way that bypasses cross-origin isolation. This category of bug in browser SVG engines historically involves scenarios where SVG elements can probe or render cross-origin resources and then expose pixel or data content back to the attacker's origin. The CVSS scope being unchanged (S:U) confirms the impact is bounded to the browser's rendering context rather than escaping the sandbox. Affected products are confirmed as all Google Chrome desktop releases prior to 149.0.7827.53 across Windows, macOS, and Linux platforms.
RemediationAI
The primary remediation is upgrading Google Chrome to version 149.0.7827.53 or later, as released in the stable channel update documented at https://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop.html. For most end-user deployments, Chrome's built-in auto-update mechanism will apply this fix automatically; enterprise administrators should validate deployment via Chrome Browser Cloud Management or group policy and confirm the installed version meets or exceeds 149.0.7827.53. As a compensating control prior to patching, restricting navigation to untrusted or unknown external websites via web proxy filtering or DNS-layer controls would reduce attack surface, though this carries operational impact in most environments. Chrome's Site Isolation feature (enabled by default) provides partial cross-origin protection at the process level and may limit the severity of exploitation in some configurations, but it does not fully remediate this SVG-specific implementation flaw and should not be relied upon as a substitute for patching.
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Same weakness CWE-200 – Information Exposure
View allSame technique Information Disclosure
View allVendor StatusVendor
SUSE
Severity: Medium| Product | Status |
|---|---|
| openSUSE Tumbleweed | Fixed |
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