Severity by source
Sources disagree (Low–High)AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
vuln.today treats the vendor’s rating as authoritative. A higher third-party CVSS (e.g. CISA-ADP) is shown for transparency but does not drive the headline severity.
CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Lifecycle Timeline
4DescriptionCVE.org
Insufficient policy enforcement in Compositing in Google Chrome prior to 149.0.7827.53 allowed a remote attacker who had compromised the renderer process to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: Low)
AnalysisAI
Sandboxed arbitrary code execution in Google Chrome versions prior to 149.0.7827.53 stems from insufficient policy enforcement in the Compositing component, requiring an attacker to first compromise the renderer process before triggering the flaw via a crafted HTML page. Google has released a patched stable channel build and rates the Chromium-internal severity as Low, while NVD scores it CVSS 8.8 due to the network attack vector and high impact triad. No public exploit identified at time of analysis, and SSVC indicates exploitation status 'none' with non-automatable attack characteristics.
Technical ContextAI
The vulnerability resides in Chrome's Compositing subsystem, which is responsible for combining painted layers from web content into the final rendered frame and operates within the sandboxed renderer process boundary. CWE-20 (Improper Input Validation) here manifests as insufficient policy enforcement, meaning the component fails to properly validate or restrict operations that should be governed by Chrome's security policies. Because Compositing runs in the renderer rather than the privileged browser process, the bug alone does not break out of the sandbox; rather, it permits code execution inside the sandbox after the renderer has already been subverted, making this a chain-link bug typically combined with a separate sandbox-escape primitive.
RemediationAI
Vendor-released patch: Google Chrome 149.0.7827.53 (stable channel) - update via Chrome's built-in updater or by visiting chrome://settings/help, then relaunch the browser to apply the fix. Enterprise administrators should push the updated MSI/PKG through their managed deployment channels and consult the Chrome Releases advisory at https://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop.html for full bulletin details. No standalone workarounds are practical because Compositing is core rendering functionality and cannot be disabled; as a defense-in-depth compensating control until patching completes, consider enforcing site isolation (enabled by default in modern Chrome) and restricting navigation to untrusted sites via enterprise policy URLBlocklist, accepting the trade-off of reduced user productivity on blocked domains. Downstream Chromium-based browsers should be updated as soon as their vendors release rebased builds.
Same weakness CWE-20 – Improper Input Validation
View allVendor StatusVendor
SUSE
Severity: Important| Product | Status |
|---|---|
| SUSE Package Hub 15 SP7 | Fixed |
| openSUSE Leap 16.0 | Fixed |
| openSUSE Tumbleweed | Fixed |
| SUSE Package Hub 15 SP7 | Affected |
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External POC / Exploit Code
Leaving vuln.today
EUVD-2026-34696
GHSA-2pp6-ppvw-38pj