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High

Use-after-free in Google Chrome Extensions

IdentifiersCVE-2026-11230CWE-416· Use After Free

CVE-2026-11230 is a use-after-free vulnerability in the Extensions 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 getting a target to open a crafted HTML page. Successful exploitation results in arbitrary code execution within the Chrome sandbox. The issue is classified as CWE-416 and is described by Chromium as having Low 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 Chrome sandbox in the context of the affected 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 potential high impact to confidentiality, integrity, and availability of the sandboxed context, but the available content does not indicate a sandbox escape or direct host-level code execution.

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 patch, reducing exposure would require limiting user interaction with untrusted HTML content, but the authoritative remediation in the provided advisories is to update to a fixed Chrome/Chromium version.

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 (oldstable) or 149.0.7827.53-1~deb13u1 for trixie (stable), as applicable.
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

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

4 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 activity3

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

EXTERNAL REFERENCES
MITRE CVE
cve.org · CVE-2026-11230
NVD
nvd.nist.gov/vuln/detail/CVE-2026-11230
MITRE CWE · CWE-416
Use After Free
Release Notes
chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop.html
Permissions Required
issues.chromium.org/issues/493225428