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Google Chrome CVE-2026-113314

| EUVDEUVD-2026-105752 HIGH
Use After Free (CWE-416)
2026-10-20 chrome-cve-admin@google.com GHSA-8hv3-jx2g-pghm
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 Media component
  3. Execution
    Reclaim freed object with controlled data
  4. 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 a victim to actively load an attacker-controlled or compromised HTML page in Chrome prior to 156.0.8078.47 that exercises the vulnerable Media component (UI:R user interaction is mandatory per the CVSS vector). No authentication is required (PR:N). The principal limiting factor is that successful code execution is confined to the renderer sandbox (Scope:Unchanged) - full host compromise would require chaining an additional sandbox-escape vulnerability. Users on the patched build (156.0.8078.47 or later) are not affected.

Impact

Signals conflict and must be weighed carefully. The provided CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H, base 8.8 High) describes remote, unauthenticated, low-complexity exploitation requiring only that a victim open a crafted HTML page. However, Google/Chromium independently rated this 'Low' severity, and the description explicitly states code execution is confined 'inside the sandbox' (Scope:Unchanged) - meaning a successful exploit yields control of the renderer process, not the host, and would require a separate sandbox-escape to achieve full system compromise. This is the key tension: the 8.8 CVSS overstates real-world impact relative to the vendor's Low rating and the sandbox containment. No EPSS score, no CISA KEV listing, and no public exploit were provided; exploitation status is therefore 'no public exploit identified at time of analysis.' Net assessment: this is a standard patch-on-cycle browser memory-safety fix, not an emergency. Priority is driven almost entirely by Chrome's ubiquity rather than by exploitation signals, which are absent. Note the inconsistency between the High CVSS and the vendor's Low rating - defenders should treat the vendor severity and sandbox-containment language as the more accurate real-risk indicator.

Exploit ScenarioDerived

An attacker hosts or injects a malicious HTML page that drives Chrome's Media component into a use-after-free condition; when a victim visits the page, the freed object is reclaimed with attacker-controlled data to execute code within the renderer sandbox. No public proof-of-concept was identified, and the code execution remains confined to the sandboxed renderer absent a chained sandbox escape.

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

Code execution inside Google Chrome's renderer sandbox is possible before version 156.0.8078.47 because of a use-after-free in the Media component that is triggered when a victim loads a crafted HTML page. The issue is unauthenticated from the attacker's perspective but requires user interaction (the victim must open the page), and the assessed CVSS vector scores it 8.8 with Scope:Unchanged, meaning compromise is confined to the sandbox unless a separate sandbox-escape flaw is chained. No public exploit was identified at time of analysis, and Google has released a fixed build, 156.0.8078.47; note that Chromium rated the bug Low severity while the CVSS score is High, a conflict that should inform risk decisions.

RemediationAI

Upgrade Google Chrome to version 156.0.8078.47 or later using the stable channel; after updating, restart the browser and verify the version from chrome://settings/help. The vendor advisory is at https://chromereleases.googleblog.com/2026/10/stable-channel-update-for-desktop_02018666648.html and the Chromium tracking issue is https://issues.chromium.org/issues/562970433; enterprise administrators should push the update through their software management tooling and confirm compliance across managed endpoints. No documented workaround replaces the patch. If immediate updating is not possible, reduce exposure by restricting browsing to trusted sites through URL filtering or enterprise policy, keeping Chrome's renderer sandbox and Site Isolation enabled, and disabling media autoplay where policy allows (for example via AutoplayAllowed=false), with the trade-off that media-heavy sites may break; because exploitation requires the user to load a crafted page, user awareness and blocking untrusted links provide only partial risk reduction.

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-2026-113314 is a CWE-416 use-after-free in Chrome's Media component, the code path that handles media parsing, decoding, and playback for HTML content. A use-after-free occurs when an object is freed but a stale pointer is later dereferenced; in a browser media pipeline this can corrupt heap memory and give an attacker control over data structures, leading to arbitrary code execution or a crash (denial of service). The CVSS vector AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H describes a remote, low-complexity attack that needs the victim to load a malicious page but no credentials; the Scope:Unchanged rating reflects that code execution stays within the renderer sandbox. Chromium's Low severity rating versus the 8.8 CVSS score is a material inconsistency-likely reflecting sandbox confinement and exploitability constraints-and the practical risk depends on whether a sandbox escape is available. No CPE strings were supplied; EUVD lists Chrome builds before 156.0.8078.47 as affected, and the vendor advisory is the Chrome stable channel update.

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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 needs victim interaction (UI:R) but no auth (PR:N); UAF yields renderer code execution with high C/I/A but no scope change (S:U) given sandbox containment.

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 20, 2026 - 23:23 NVD
8.8 (HIGH)
Patch available
Oct 20, 2026 - 23:20 EUVD
CVE Published
Oct 20, 2026 - 22:19 cve.org
HIGH 8.8

DescriptionCVE.org

Use after free in Media 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: Low)

Executive ViewAI

Why It Matters

Organizations running Google Chrome versions earlier than 156.0.8078.47 face a browser-based code execution risk that is activated by user browsing activity and contained by the renderer sandbox unless an additional flaw is chained. Vendor-released patch: 156.0.8078.47, and no public exploit identified at time of analysis; however, the broad install base and conflicting severity ratings (Chromium Low versus CVSS High) justify prompt patch verification rather than deferred action. Leadership should care because unpatched browsers on employee endpoints can expose sensitive browsing sessions and create downstream incident-response costs even when exploitation is not yet observed.

Business Impact: Medium
Compensating Controls

Apply vendor patch.

Threat Intelligence Overview

EPSS Score
0.4%
Top 68% 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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