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Google Chrome CVE-2026-106314

| EUVDEUVD-2026-93676 HIGH
Incorrect Authorization (CWE-863)
2026-10-06 Chrome GHSA-jj5x-7m66-mcch
8.8
CVSS 3.1 · Vendor: Chrome
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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
    Page invokes Web Bluetooth APIs
  3. Execution
    Bypass incorrect authorization check
  4. Impact
    Exfiltrate sensitive Bluetooth information

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V8 - Authorization Authorization logic validation
MITRE ATT&CK

1 technique across 1 tactic: 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 unpatched Google Chrome build prior to 155.0.8059.39 and to actively open an attacker-crafted HTML page (UI:R) that exercises the Web Bluetooth path - it is not a no-interaction drive-by. No authentication is required (PR:N, unauthenticated remote attacker). The incorrect authorization (CWE-863) is in Chrome's Bluetooth handling, so the browser must reach that vulnerable Bluetooth code path; the primary limiting factors are the mandatory user interaction and the need for the victim to run a vulnerable Chrome version. The weakness is in the client browser itself, so no non-default server configuration is implicated.

Impact

Signals conflict and must be weighed carefully. The supplied CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H, score 8.8) claims high impact across confidentiality, integrity AND availability, yet the CVE description states only that the flaw 'allowed a remote attacker to obtain sensitive information' - a confidentiality-only outcome - and Google's own Chromium severity rating is Medium, not High/Critical. The I:H/A:H claim is not supported by the described information-disclosure behavior and should be treated as an inflated/aggregator-assigned vector; real severity is closer to Medium. No EPSS score, no CISA KEV listing, and no public POC appear in the input, so there is no public exploit identified at time of analysis and no evidence of active or widespread exploitation. Exploitation is further gated by required user interaction (UI:R) - the victim must open an attacker-controlled HTML page - which lowers real-world risk below what the 8.8 number implies. Net: patch as part of normal Chrome update hygiene, but this is a high-CVSS-number / moderate-real-risk issue rather than an emergency. Verify true impact scope (confidentiality only vs. C/I/A) against the vendor advisory.

Exploit ScenarioDerived

A remote attacker lures a victim into visiting a malicious web page that abuses Chrome's Web Bluetooth authorization logic. Because authorization is incorrectly enforced, the page accesses Bluetooth-related data it should not be permitted to read, leaking sensitive information from the browser or paired devices. No public exploit code is identified at time of analysis, and the attack requires the victim to actively open the crafted page (UI:R).

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
Patch available 0.2% exploitation probability (EPSS)

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AnalysisAIv1 – Oct 06, 2026

Sensitive information disclosure in Google Chrome builds prior to 155.0.8059.39 lets an unauthenticated remote attacker obtain data through the browser's Bluetooth handling by convincing a victim to open a crafted HTML page (CVSS 3.1 AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N per the independent assessment). The root cause is an incorrect authorization check (CWE-863) in the Web Bluetooth code path, so exploitation is limited to an information leak rather than code execution; the mandatory UI:R requirement means this is not a no-interaction drive-by, and the victim must be running a vulnerable Chrome version that reaches the affected Bluetooth logic. No public exploit identified at time of analysis, and the issue is not confirmed actively exploited (no CISA KEV entry), although the vendor-rated 8.8 score conflicts with the assessed confidentiality-only vector and should be weighed as a severity signal rather than proof of integrity or availability impact. Vendor-released patch: 155.0.8059.39.

RemediationAI

Update Google Chrome to 155.0.8059.39 or later - this is the vendor-released patch referenced in the Stable Channel Update for Desktop advisory (https://chromereleases.googleblog.com/2026/10/stable-channel-update-for-desktop_086471744.html), with the underlying Chromium fix tracked at https://issues.chromium.org/issues/501533684; verify the installed build via chrome://version and fully restart the browser (and all running profiles) so the relaunch actually picks up the new binary, since Chrome update-on-restart can leave a stale process running. Where immediate mass upgrade is impractical, prioritize hosts whose users browse arbitrary external content. Compensating controls, to be used only until patching completes: block or deny Web Bluetooth permission prompts through Chrome's site-setting and enterprise policy mechanisms so pages cannot reach the affected Bluetooth code path, and consider disabling Bluetooth on endpoints that do not need it - both measures break legitimate BLE-dependent web applications and web-based device provisioning, so scope them narrowly and document the exception. Restricting users from opening untrusted HTML pages reduces exposure but is unreliable as a standalone control, and because the public CVSS listing of 8.8 conflicts with the assessed confidentiality-only impact, remediation timelines should be driven by the information-disclosure risk rather than the higher headline score.

Affected VersionsENISA

Chrome 155.0.8059.39 <155.0.8059.39

Affected Packages

euvd chrome fix: 155.0.8059.39

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 vulnerability resides in Chrome's client-side Bluetooth integration, which implements the Web Bluetooth API that allows web pages to discover, connect to, and interact with nearby Bluetooth Low Energy peripherals. CWE-863 (Incorrect Authorization) indicates that an authorization decision in that implementation is missing or incorrectly enforced - an origin that should be denied access to a privileged Bluetooth operation or associated data is not properly checked, allowing a crafted HTML page to retrieve sensitive information from the affected code path. Exploitation is entirely client-side: no non-default server configuration or additional service exposure is implicated, and the independent assessment's vector (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N) confirms a remote, unauthenticated attacker whose only prerequisite is that the victim opens the malicious page in an unpatched browser, with impact limited to confidentiality. Affected builds are captured by the CPE cpe:2.3:a:google:chrome:*:*:*:*:*:*:* and the EUVD-listed range <155.0.8059.39; the underlying fix is tracked in the Chromium issue tracker (issues.chromium.org/issues/501533684) and disclosed through the Chrome Stable Channel update for desktop.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Vendor (Chrome) PRIMARY 8.8 HIGH
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
vuln.today AI 6.5 MEDIUM

Network-reachable crafted page with no auth (AV:N/PR:N) but mandatory victim interaction (UI:R); described outcome is information disclosure only, so C:H with I:N/A:N, consistent with the vendor Medium rating.

3.1 AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
4.0 AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Red Hat 6.5 MEDIUM

Primary rating from Vendor (Chrome).

CVSS VectorVendor: Chrome

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

Lifecycle Timeline

4
CVSS changed
Oct 06, 2026 - 21:22 NVD
8.8 (HIGH)
Patch available
Oct 06, 2026 - 20:04 EUVD
CVE Published
Oct 06, 2026 - 18:41 cve.org
HIGH 8.8
CVE Published
Oct 06, 2026 - 18:41 cve.org
UNKNOWN (no severity yet)

DescriptionCVE.org

Incorrect authorization in Bluetooth in Google Chrome prior to 155.0.8059.39 allowed a remote attacker to obtain sensitive information via a crafted HTML page. (Chromium security severity: Medium)

Executive ViewAI

Why It Matters

Google Chrome versions prior to 155.0.8059.39 contain an authorization flaw in the browser's Bluetooth handling that can leak sensitive data to an attacker-controlled web page. Because exploitation requires a user to open a crafted HTML page, any employee using an unpatched Chrome build for browsing is a potential exposure point, and the leaked data could include information the browser has access to on the user's behalf. Leadership should care because Chrome is a ubiquitous enterprise endpoint component and this issue is fully remediated by a routine vendor update, making rapid version enforcement the primary risk control.

Business Impact: Medium
Compensating Controls

Apply vendor patch.

Threat Intelligence Overview

EPSS Score
0.2%
Top 89% exploitable
Prevalence
Ubiquitous
Google Chrome is among the most widely deployed browsers worldwide
Data Quality
7 sources
Confidence: High

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 0.2%
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
Scheduled
Exploitation
None
System Exposure· derived
Open
Automatable
No
Human Impact
Medium
Technical Impact
Partial

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

Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.

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Vendor StatusVendor

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