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High

Use-after-free in Guest View in Google Chrome

IdentifiersCVE-2026-11674CWE-416· Use After Free

CVE-2026-11674 is a high-severity use-after-free vulnerability in the Guest View component of Google Chrome. It affects Google Chrome versions prior to 149.0.7827.103. According to the provided content, a remote attacker can trigger the flaw by supplying a crafted HTML page, leading to arbitrary code execution inside the Chrome sandbox. The issue is classified as CWE-416 and was assigned a Chromium security severity of High.

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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 within the browser's sandboxed context. Based on the provided CVSS vector (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H), exploitation can have high impact on confidentiality, integrity, and availability within that sandboxed execution context.

Mitigation

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

No specific temporary workaround or mitigation was provided in the supplied content beyond applying the vendor security updates. Until patching is completed, reducing exposure to untrusted web content may lower risk, but the authoritative remediation in the provided sources is to upgrade to a fixed version.

Remediation

Patch, then assume compromise.

Upgrade Google Chrome to version 149.0.7827.103 or later. For Debian Chromium packages, apply the vendor-provided fixed versions: 149.0.7827.102-1~deb12u1 for Debian oldstable (bookworm) or 149.0.7827.102-1~deb13u1 for Debian stable (trixie), as referenced in the provided advisory content.
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

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

2 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 activity

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

EXTERNAL REFERENCES
MITRE CVE
cve.org · CVE-2026-11674
NVD
nvd.nist.gov/vuln/detail/CVE-2026-11674
MITRE CWE · CWE-416
Use After Free
Vendor Advisory
chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop_0153744567.html
Permissions Required
issues.chromium.org/issues/516910450