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High

Insufficient policy enforcement in Google Chrome Compositing

IdentifiersCVE-2026-11235CWE-20· Improper Input Validation

CVE-2026-11235 is an insufficient policy enforcement flaw in the Compositing component of Google Chrome prior to 149.0.7827.53. According to the provided content, a remote attacker who has already compromised the renderer process can trigger arbitrary code execution inside the Chrome sandbox by causing a target to load a crafted HTML page. The issue is described by Chromium as affecting policy enforcement in Compositing rather than a direct sandbox escape, and the available information does not identify a specific vulnerable function.

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ANALYST BRIEF

Impact, mitigation & remediation

What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.

Impact

What an attacker gets, and what they’ve been doing with it.

Successful exploitation allows an attacker who already controls the renderer process to execute arbitrary code within the sandboxed browser context. The provided CVSS vector indicates potential high impact to confidentiality, integrity, and availability, but the attacker remains constrained by the sandbox based on the available information. The issue can therefore be used as a post-renderer-compromise code-execution primitive within Chrome's sandboxed environment.

Mitigation

If you can’t patch tonight, do this now.

No specific workaround or temporary mitigation is provided in the supplied content. In the absence of a vendor workaround, mitigation is limited to reducing exposure to untrusted web content and applying the fixed browser version as soon as possible.

Remediation

Patch, then assume compromise.

Upgrade Google Chrome to version 149.0.7827.53 or later. For Debian chromium packages, upgrade to the vendor-fixed builds identified in the advisory, including 149.0.7827.53-1~deb12u1 for bookworm and 149.0.7827.53-1~deb13u1 for trixie.
PUBLIC EXPLOITS

Exploits

No public exploits tracked yet. Mallory keeps watching.

VALID 0 / 0 TOTALView more in app

No public exploit code observed for this vulnerability.

EXPOSURE SURFACE

Affected products & vendors

Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.

VendorProductType
GoogleChromeapplication

Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.

ACTIVITY FEED

Recent activity

3 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.

3 SOURCESView more in app
What this page doesn’t show

The version that knows your environment.

This page is what’s public. Mallory adds the parts that aren’t: which of your assets are affected, which adversaries are exploiting it right now, which detections to deploy, and what to do tonight.
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Exposure mapping

Query your assets running an affected version, and investigate the blast radius.

Threat actor evidence

Every observed campaign linking this CVE to a named adversary.

Associated malware

Malware families riding this exploit, with evidence and IOCs.

Detection signatures

YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.

Vendor-by-vendor mapping

Cross-references every affected SKU, including bundled OEM variants.

Social activity2

Community discussion across Reddit, Mastodon, and other social sources.

EXTERNAL REFERENCES
MITRE CVE
cve.org · CVE-2026-11235
NVD
nvd.nist.gov/vuln/detail/CVE-2026-11235
MITRE CWE · CWE-20
Improper Input Validation
Release Notes
chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop.html
Permissions Required
issues.chromium.org/issues/496419374