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High

Use-after-free in Google Chrome Compositing

IdentifiersCVE-2026-11125CWE-416· Use After Free

CVE-2026-11125 is a use-after-free vulnerability in the Compositing component of Google Chrome affecting versions prior to 149.0.7827.53. According to the provided content, a remote attacker can trigger the flaw by causing a target to load a crafted HTML page. Successful exploitation allows arbitrary code execution within the Chrome sandbox. The issue is described by Chromium as having Medium security severity.

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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 a remote attacker to execute arbitrary code inside the browser sandbox in the context of the affected Chrome renderer/process handling the crafted content. The provided CVSS vector (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H) indicates potential high impact to confidentiality, integrity, and availability within that sandboxed context. The supplied Debian advisory also notes that Chromium vulnerabilities in this update set may lead to arbitrary code execution, denial of service, or information disclosure, but for this specific CVE the provided description specifically supports arbitrary code execution inside the sandbox.

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, the practical mitigation is to apply the fixed Chrome/Chromium update. Reducing exposure to untrusted web content may lower risk, but this is not a vendor-stated mitigation in the provided material.

Remediation

Patch, then assume compromise.

Upgrade Google Chrome to version 149.0.7827.53 or later. For Debian chromium packages, upgrade to the fixed distribution versions referenced in the provided advisory: bookworm (oldstable) to 149.0.7827.53-1~deb12u1 or trixie (stable) to 149.0.7827.53-1~deb13u1.
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.

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.
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.