---
id: "CVE-2026-96196"
kind: "vulnerability"
aliases: ["CVE-2026-96196"]
title: "Microsoft Edge: incomplete input filter lets attackers bypass a security feature"
severity: "high"
cvss: 8.8
epss: null
exploited: false
status: "open"
category: "runtime"
products: [{"name": "Microsoft Edge (Chromium-based)", "fixed": ["156.0.4314.42"], "affected": "< 156.0.4314.42", "ecosystem": "vendor"}]
ecosystems: []
tags: ["browser", "chromium", "microsoft-edge", "runtime", "windows"]
not_affected_if: ["edge-156.0.4314.42-or-later", "no-edge-installed"]
published_at: "2026-10-29T16:20:08+00:00"
first_seen_at: "2026-10-29T16:26:03+00:00"
updated_at: "2026-10-29T16:34:51+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-96196", "first_seen_at": "2026-10-29T16:26:03+00:00"}, {"source": "analyst", "url": null, "first_seen_at": "2026-10-29T16:34:51+00:00"}]
---

# Microsoft Edge: incomplete input filter lets attackers bypass a security feature

Microsoft Edge (Chromium-based) has an incomplete list of disallowed inputs (CWE-184) that lets a network attacker bypass a security feature once a user opens attacker-controlled content. MSRC says the bypassed safeguard is the path validation that checks which files may be changed and asks for approval for sensitive locations. Fixed in Edge 156.0.4314.42.

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

## Affected

- vendor:Microsoft Edge (Chromium-based) affected < 156.0.4314.42 fixed 156.0.4314.42

## How to check

Open edge://settings/help and confirm Edge is 156.0.4314.42 or later; anything older on the 156 line is exposed.

## Fix

Update Microsoft Edge (Chromium-based) to 156.0.4314.42 or later (edge://settings/help, or your managed Edge update channel).

## Timeline

- 2026-10-29T16:26:03+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-96196
- 2026-10-29T16:34:51+00:00 analyst — Read MSRC page: CWE-184, Edge fixed in 156.0.4314.42 (released Oct 27 2026), not exploited, not publicly disclosed, no PoC. CERT-FR says 156.x before 156.0.4314.42; its second range (<149.0.4022.62) belongs to another CVE in the bulletin, not confirmed for this one. No workaround or mitigation on MSRC. X not searched (low-profile, no named issue).

## Documents

- [advisory] MSRC: CVE-2026-96196 Edge (Chromium-based) Security Feature Bypass https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-96196
- [mentions] CERT-FR CERTFR-2026-AVI-1405 Microsoft Edge https://www.cert.cyber.gouv.fr/avis/CERTFR-2026-AVI-1405/

## From the sources

Incomplete list of disallowed inputs in Microsoft Edge (Chromium-based) allows an unauthorized attacker to bypass a security feature over a network.

---

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