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Google Chrome CVE-2026-113081

| EUVDEUVD-2026-105599 HIGH
Use After Free (CWE-416)
2026-10-20 chrome-cve-admin@google.com GHSA-5c28-48hj-v3c2
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 web page
  2. Delivery
    Serve malicious HTML to browser
  3. Exploit
    Trigger use-after-free in Compositing
  4. Execution
    Reclaim freed object, hijack control flow
  5. Impact
    Execute arbitrary code within 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 use an affected Google Chrome build prior to 156.0.8078.47 and to load attacker-controlled web content (UI:R) - no authentication or prior privileges are needed (PR:N). The defining limiting factor is that successful code execution is confined to the renderer SANDBOX (scope Unchanged); to escape the sandbox and compromise the host, an attacker must chain this with a separate sandbox-escape vulnerability. No special victim-side configuration is required, so default Chrome installations rendering the malicious page are exposed, but the attack cannot succeed without user navigation to the crafted page.

Impact

Signals are mostly aligned toward a genuine but bounded priority. The CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:R) describes a remote, unauthenticated, low-complexity attack that only requires a victim to load a crafted HTML page - a realistic drive-by condition for a browser. However, the most important mitigating signal is embedded in the description itself: code execution is 'inside the sandbox' and the CVSS scope is Unchanged (S:U), so a successful exploit is contained to the renderer sandbox and would require a separate sandbox-escape chain to achieve full host compromise. This is consistent with Chromium's own 'Medium' severity rating, which is notably LOWER than the aggregate CVSS of 8.8 - a conflict worth flagging: the 8.8 reflects full C/I/A loss within the renderer, while Google's Medium rating reflects the sandbox containment that limits real-world blast radius. No EPSS score was provided, so exploitation probability cannot be quantified. The CVE is NOT on CISA KEV and no POC is referenced, so this is not confirmed active exploitation. No SSVC decision data was supplied. Net: a credible memory-corruption flaw in a ubiquitously-deployed product that should be patched promptly via normal browser auto-update cadence, but absent a paired sandbox escape it is not an immediate full-system-compromise emergency.

Exploit ScenarioDerived

An attacker hosts or compromises a web page containing specially crafted HTML/content that triggers the use-after-free in Chrome's Compositing component when rendered. A victim who merely visits the page (UI:R) has attacker-controlled code executed within the browser's renderer sandbox. No public exploit is referenced, and full host compromise would additionally require chaining a separate sandbox-escape vulnerability.

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 Compositing component allows a remote attacker to execute arbitrary code inside the renderer sandbox when a victim loads a crafted HTML page in a build prior to 156.0.8078.47. The issue is unauthenticated from the network perspective but requires user interaction (UI:R), and the independent assessment bounds impact to sandbox code execution because scope is Unchanged; host compromise would require chaining a separate sandbox escape. Vendor-released patch: 156.0.8078.47; no public exploit identified at time of analysis.

RemediationAI

Upgrade Google Chrome to 156.0.8078.47 or later (vendor-released patch: 156.0.8078.47). Use Chrome's built-in auto-update or enterprise update enforcement, verify the installed version via chrome://version, and block or isolate Chrome installations below that build. Where immediate upgrade is not possible, reduce exposure by restricting navigation to trusted sites and isolating browsing in a disposable or remote environment, accepting reduced usability as the trade-off; disabling compositing is not a documented workaround and may break rendering. Consult the Chrome advisory at https://chromereleases.googleblog.com/2026/10/stable-channel-update-for-desktop_02018666648.html and the Chromium issue at https://issues.chromium.org/issues/534956586 for vendor details.

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

CVE-2026-113081 is a CWE-416 use-after-free in Chromium's Compositing component, the rendering pipeline that assembles page layers before display. A use-after-free means an object is freed while still referenced; subsequent use can corrupt memory and, in this case, permit arbitrary code execution within the Chrome renderer process. Because the assessed vector has scope Unchanged and the impact is confined to the renderer sandbox, the defect does not by itself grant host-level compromise; an attacker would need a second, separate sandbox-escape vulnerability to break out. The affected technology is Google Chrome builds prior to 156.0.8078.47; no CPE identifiers were supplied, so platform-specific narrowing beyond the vendor's affected Chrome builds is not possible from the available data.

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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 with no auth (AV:N/PR:N) but requires user to load it (UI:R); scope Unchanged because execution stays in the renderer sandbox, with full C/I/A loss there.

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 Compositing 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

A high-severity memory corruption flaw in Google Chrome's Compositing component (CVE-2026-113081) allows a crafted web page to run attacker-supplied code inside the browser's renderer sandbox on any machine running a Chrome build older than 156.0.8078.47, and because exploitation requires the user to visit a malicious or compromised page, every employee who browses the web with an unpatched browser is a potential entry point. Impact is currently bounded to the renderer sandbox - full host compromise would need a second, separate sandbox-escape vulnerability - and no public exploit has been identified, so leadership should treat this as a manageable but time-sensitive fleet hygiene issue rather than an active incident.

Business Impact: Medium
Compensating Controls

Apply vendor patch.

Threat Intelligence Overview

EPSS Score
0.4%
Top 72% exploitable
Prevalence
Ubiquitous
Google Chrome is among 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
Medium

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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