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Mallory
High

Use-after-free in DOM in Google Chrome

IdentifiersCVE-2026-9126CWE-416· Use After Free

CVE-2026-9126 is a use-after-free vulnerability in the DOM component of Google Chrome. It affects Chrome versions prior to 148.0.7778.179. According to the provided content, a remote attacker can trigger the flaw via a crafted HTML page, leading to memory corruption and arbitrary code execution inside the Chrome sandbox. Chromium rated the issue as Medium severity, and the vulnerability is mapped to CWE-416.

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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 can result in arbitrary code execution within the Chrome sandbox in the context of the targeted browser process. The provided CVSS v3.1 vector (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H) indicates network-reachable exploitation with user interaction and potentially high impact to confidentiality, integrity, and availability within the affected sandboxed context. The content does not indicate a sandbox escape or direct host-level code execution.

Mitigation

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

Apply the vendor update as soon as possible and verify the browser has been restarted into the patched build. Until patching is complete, reduce exposure by limiting access to untrusted or attacker-controlled web content, using browser sandboxing and other platform hardening features, and restricting high-risk browsing activity where feasible. No specific workaround beyond updating is provided in the supplied content.

Remediation

Patch, then assume compromise.

Update Google Chrome to version 148.0.7778.179 or later. The provided content states that versions prior to 148.0.7778.179 are affected, and Google released Chrome Stable updates 148.0.7778.178/179 for Windows and Mac and 148.0.7778.178 for Linux as part of the security rollout. Organizations should ensure affected installations receive the vendor fix and that browsers are restarted so the patched version is active.
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 activity6

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