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Google Chrome CVE-2026-113068

| EUVDEUVD-2026-105476 HIGH
Use After Free (CWE-416)
2026-10-20 chrome-cve-admin@google.com GHSA-8mp2-j4q5-876g
8.8
CVSS 3.1 · Vendor: google
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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Lure victim to crafted HTML page
  2. Exploit
    Trigger use-after-free in Input component
  3. Execution
    Reclaim freed object with controlled data
  4. Impact
    Execute arbitrary code in renderer sandbox

Vulnerability Assessment

Weakness
CWE
ASVS 5.0
V15 - Secure Coding and Architecture Memory lifecycle management
MITRE ATT&CK

2 techniques across 2 tactics: Execution, Privilege Escalation

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Exploitation Conditions

Exploitation requires the victim to load attacker-controlled content in Chrome - specifically visiting or rendering a crafted HTML page (UI:R) - triggering the use-after-free in the Input component; no authentication or elevated privileges are needed (PR:N). The key limiting factor is sandbox containment: arbitrary code runs INSIDE the Chrome renderer sandbox, so a separate sandbox-escape is required to reach the underlying OS, meaningfully constraining real-world impact. Only Chrome builds prior to 156.0.8078.47 across desktop and ChromeOS are affected; updated installations are not exploitable.

Impact

This is a genuine high-priority patch target, though the real-world risk is more nuanced than the 8.8 CVSS alone suggests. The CVSS vector (AV:N/AC:L/PR:N/UI:R) describes a remotely reachable, low-complexity, unauthenticated memory-corruption bug requiring only that a victim load a crafted HTML page - a realistic condition for a web browser. The critical qualifier straight from the description is that code execution occurs INSIDE the Chrome sandbox (consistent with S:U, Scope Unchanged); without a chained sandbox-escape this does not by itself yield full host compromise, which tempers the practical impact versus a classic unsandboxed RCE. Signals are otherwise thin: there is no CISA KEV listing and no public POC referenced, so exploitation status is 'no public exploit identified at time of analysis.' Note the apparent tension that Google rates the Chromium severity only 'Medium' while the assigned CVSS base is 8.8/High - this reflects Google's internal rating that factors in the sandbox containment, whereas CVSS scores the renderer-level impact; both are internally consistent once sandbox scope is understood. EPSS data was not provided and cannot be commented on. Bottom line: patch promptly given Chrome's ubiquity and the browser-UAF exploitation track record, but treat this as sandboxed-renderer RCE rather than confirmed in-the-wild full-system compromise.

Exploit ScenarioDerived

An attacker hosts a malicious web page (or injects malicious content into an ad/iframe on a compromised site) that triggers the use-after-free in Chrome's Input component when a victim browses to it. Exploiting the freed object lets the attacker execute arbitrary code within the renderer sandbox, typically as a first stage to be chained with a separate sandbox-escape for full compromise. No public exploit code was identified in the provided data, so this remains a theoretical-but-realistic scenario for a browser UAF.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
Patch available 0.4% exploitation probability (EPSS)

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AnalysisAIv1 – Oct 21, 2026

Use-after-free in Google Chrome's Input component before 156.0.8078.47 allows a remote attacker to execute arbitrary code inside the renderer sandbox when a victim loads a crafted HTML page. Exploitation requires user interaction and no privileges, but code execution is confined to Chrome's sandbox, so a separate sandbox escape is needed for OS-level compromise. No public exploit identified at time of analysis, no confirmed active exploitation, and a vendor patch is available.

RemediationAI

Vendor-released patch: Google Chrome 156.0.8078.47. Upgrade desktop Chrome through the built-in auto-update mechanism or the platform package manager, and update ChromeOS through the system update channel; verify the installed version via chrome://version or the ChromeOS settings/about page. The vendor advisories are https://chromereleases.googleblog.com/2026/10/stable-channel-update-for-desktop_02018666648.html and http://chromereleases.googleblog.com/2026/10/stable-channel-update-for-chromeos_01150416531.html. No documented feature-level workaround was provided, so organizations that cannot immediately patch should reduce exposure by restricting browsing of untrusted HTML content and enforcing network/web filtering, accepting reduced usability and incomplete protection; Chrome's renderer sandbox and Site Isolation limit post-exploitation impact but do not remediate the underlying use-after-free.

Affected VersionsENISA

Chrome 156.0.8078.47 <156.0.8078.47

Affected Packages

euvd chrome fix: 156.0.8078.47

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

The flaw is a CWE-416 use-after-free in Chrome's Input handling path: an object associated with input processing can be freed while still referenced, and subsequent access corrupts memory in a way that can be steered toward code execution. The assessed vector is CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H, meaning a network-delivered crafted HTML page must be rendered by the victim (UI:R), no authentication is required (PR:N), and impact is scope-unchanged but high for confidentiality, integrity, and availability. The critical constraint is that the resulting arbitrary code executes inside Chrome's renderer sandbox; without an additional sandbox-escape vulnerability, the attacker cannot directly reach the underlying operating system. Affected builds are Chrome desktop and ChromeOS versions prior to 156.0.8078.47; updated installations are not exploitable. The memory-corruption/use-after-free classification aligns with the supplied RCE and denial-of-service tags, but the sandbox boundary is central to real-world risk.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Vendor (google) PRIMARY 8.8 HIGH
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
vuln.today AI 8.8 HIGH

Remote crafted-page delivery gives AV:N/AC:L/PR:N; victim must load the page so UI:R; sandboxed renderer code execution keeps S:U with full C/I/A at the renderer level.

3.1 AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
4.0 AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Primary rating from Vendor (google).

CVSS VectorVendor: google

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

3
CVSS changed
Oct 21, 2026 - 00:23 NVD
8.8 (HIGH)
Patch available
Oct 20, 2026 - 23:20 EUVD
CVE Published
Oct 20, 2026 - 22:18 cve.org
HIGH 8.8

DescriptionCVE.org

Use after free in Input in Google Chrome prior to 156.0.8078.47 allowed a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: Medium)

Executive ViewAI

Why It Matters

Google Chrome versions prior to 156.0.8078.47 contain a high-severity use-after-free in the Input component that can allow a crafted web page to execute attacker-controlled code inside the renderer sandbox. No public exploit was identified at time of analysis; exploitation requires user interaction and would need an additional sandbox escape for operating-system-level compromise. Leadership should prioritize rapid browser fleet remediation because unpatched Chrome installations remain the primary exposure point.

Business Impact: High
Compensating Controls

Apply vendor patch.

Threat Intelligence Overview

EPSS Score
0.4%
Top 72% exploitable
Prevalence
Ubiquitous
Google Chrome is one of the most widely deployed browsers worldwide
Data Quality
4 sources
Confidence: Medium

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity HIGH
CISA KEV No
Public POC No
EPSS 0.4%
Patch available Yes
Active threat No
Deciding rule
HIGH severity (CVSS 7.0-8.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation· derived
None
System Exposure· derived
Open
Automatable· derived
No
Human Impact
High

Priority Score

44
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +44
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Use-after-free vulnerabilities occur when a program continues to access memory through a pointer after that memory has been deallocated.

Memory corruption occurs when a program writes data beyond the boundaries of allocated memory regions or accesses memory in unintended ways, violating the integrity of the process's address space.

Remote Code Execution represents the critical moment when an attacker successfully runs arbitrary code on a target system without physical access.

Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.

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