---
id: "CVE-2026-121243"
kind: "vulnerability"
aliases: ["CVE-2026-121243"]
title: "Google Chrome: crafted web page can leak sensitive information from Frames"
severity: "low"
cvss: null
epss: null
exploited: false
status: "open"
category: "runtime"
products: []
ecosystems: []
tags: ["browser", "chrome", "desktop", "mobile", "runtime"]
not_affected_if: ["chrome-up-to-date"]
published_at: "2026-11-03T21:17:34+00:00"
first_seen_at: "2026-11-03T21:19:29+00:00"
updated_at: "2026-11-03T21:21:08+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-121243", "first_seen_at": "2026-11-03T21:19:29+00:00"}]
---

# Google Chrome: crafted web page can leak sensitive information from Frames

A flaw in how Chrome handles Frames lets a crafted HTML page obtain sensitive information. Chromium rates it Low severity.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the Chrome version in Chrome's About page or with `chrome --version` on the machine.
- Compare the installed version against `157.0.8103.38`; anything older is listed as affected.

## Fix

- Google Chrome: update to `157.0.8103.38` or later.

## Timeline

- 2026-11-03T21:19:29+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-121243

## From the sources

Information leak in Frames in Google Chrome prior to 157.0.8103.38 allowed a remote attacker to obtain sensitive information via a crafted HTML page. (Chromium security severity: Low)

---

_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_