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High

Use-after-free in Payments in Google Chrome on Mac

IdentifiersCVE-2026-11657CWE-416· Use After Free

CVE-2026-11657 is a high-severity use-after-free vulnerability in the Payments component of Google Chrome on Mac. It affects Chrome versions prior to 149.0.7827.103. According to the provided content, a remote attacker can trigger the flaw via a crafted HTML page, leading to arbitrary code execution. The issue is classified as CWE-416 and is described by Chromium as High 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 can allow remote arbitrary code execution on an affected Mac system in the context of the Chrome process after a user visits a maliciously crafted HTML page. The provided CVSS v3.1 vector (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H) indicates high impact to confidentiality, integrity, and availability.

Mitigation

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

No specific temporary workaround or mitigation is provided in the supplied content. The available mitigation is to apply the vendor or downstream distribution security update as soon as possible.

Remediation

Patch, then assume compromise.

Upgrade Google Chrome on Mac to version 149.0.7827.103 or later. Debian chromium advisories in the provided content also indicate fixed package versions for downstream distributions, specifically 149.0.7827.102-1~deb12u1 for Debian oldstable (bookworm) and 149.0.7827.102-1~deb13u1 for Debian stable (trixie).
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

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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

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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.