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Use-after-Free in Google Chrome Web Authentication

IdentifiersCVE-2026-13029CWE-416

CVE-2026-13029 is a high-severity use-after-free vulnerability in the Web Authentication component of Google Chrome affecting versions prior to 149.0.7827.197. The flaw can be triggered via a crafted malicious Chrome extension after a user is convinced to install it. Successful exploitation may lead to heap corruption in the browser process. Publicly available information does not identify the specific vulnerable function, but the bug class and affected component indicate a memory-lifetime error in Chrome's Web Authentication handling.

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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 cause heap corruption, which may result in browser instability or crash, denial of service, and potentially arbitrary code execution within the Chrome/browser context. Because exploitation requires a malicious extension, the attacker’s practical impact depends on convincing the target to install and run that extension.

Mitigation

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

Until patching is complete, prevent installation of untrusted or suspicious Chrome extensions. In enterprise environments, restrict extension installation using Chrome policy, allowlist only vetted extensions, disable unnecessary extension installation paths, and monitor for unauthorized extension deployment.

Remediation

Patch, then assume compromise.

Upgrade Google Chrome to version 149.0.7827.197 or later. Ensure all managed endpoints receive the Stable channel update corresponding to 149.0.7827.196/197 for Windows and Mac or the fixed Linux release lineage, and verify extension governance policies are aligned with the patched browser deployment.
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 activity1

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

EXTERNAL REFERENCES
MITRE CVE
cve.org · CVE-2026-13029
NVD
nvd.nist.gov/vuln/detail/CVE-2026-13029
MITRE CWE · CWE-416
cwe.mitre.org