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High

Use-after-free in Google Chrome Cast

IdentifiersCVE-2026-6317CWE-416· Use After Free

CVE-2026-6317 is a high-severity use-after-free vulnerability in the Cast component of Google Chrome. According to the provided content, the flaw exists in Chrome's Cast-related functionality and arises when a pointer to a Cast-related object is accessed after the underlying memory has already been freed, creating a dangling-pointer condition. A remote attacker can trigger the bug via a crafted HTML page and potentially reclaim the freed memory with attacker-controlled data, which may allow redirection of execution flow. Google states that affected versions are Chrome prior to 147.0.7727.101, with patched builds released as 147.0.7727.101/102 on Windows and macOS, 147.0.7727.101 on Linux, and 147.0.7727.101 on Android.

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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 lead to arbitrary code execution in the context of the browser process. The provided content also indicates high impact to confidentiality, integrity, and availability, consistent with the assigned CVSS 3.1 vector AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H. Depending on sandboxing and any chained vulnerabilities, this could enable theft of sensitive browser-accessible data, manipulation of browser state or content, and browser process compromise or crash.

Mitigation

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

If immediate patching is not possible, reduce exposure by limiting use of untrusted websites and web content until updates are deployed. Prioritize rapid rollout through enterprise endpoint management or MDM tooling, as noted in the provided content. Because exploitation requires visiting a malicious webpage, restricting browsing to trusted destinations and minimizing user exposure to attacker-controlled HTML content can reduce risk temporarily, but patching is the primary mitigation.

Remediation

Patch, then assume compromise.

Update Google Chrome to a fixed version. The provided content states that Google addressed the issue in Chrome 147.0.7727.101/102 for Windows and macOS, 147.0.7727.101 for Linux, and 147.0.7727.101 for Android. Organizations using Chromium-based browsers should also monitor and apply vendor-specific updates once those browsers integrate the upstream Chromium fix. A browser relaunch is required to complete installation of the Chrome update.
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

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

6 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-2026-6317
NVD
nvd.nist.gov/vuln/detail/CVE-2026-6317
MITRE CWE · CWE-416
Use After Free
Vendor Advisory
chromereleases.googleblog.com/2026/04/stable-channel-update-for-desktop_15.html
Permissions Required
issues.chromium.org/issues/500091052