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Google Chrome CVE-2026-106371

| EUVDEUVD-2026-93636 HIGH
Incorrect Authorization (CWE-863)
2026-10-06 Chrome GHSA-p69g-86pm-5hp9
High
Disputed · 8.8 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 loads in Chrome Transactions Platform
  3. Execution
    Bypass incorrect authorization check
  4. Impact
    Exfiltrate sensitive 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

Requires a victim running Google Chrome for Android prior to 155.0.8059.39 to actively open an attacker-crafted HTML page (UI:R) that targets the Transactions Platform component; no authentication or prior privileges are needed (PR:N) and the attack is fully remote (AV:N). The primary limiting factor is the mandatory user interaction - the victim must be lured into loading the malicious page - plus the narrow platform scope (Chrome on Android, not desktop) and the need for the vulnerable version to be installed. Impact per the description is limited to disclosure of sensitive information, not code execution.

Impact

Signals conflict sharply and must be reconciled before prioritization. The input CVSS base score is 8.8 (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H), which rates High/Critical and claims full confidentiality, integrity, AND availability impact - yet the Chromium security severity is explicitly 'Low' and the description only describes the ability to 'obtain sensitive information' (a confidentiality-only outcome). The C:H/I:H/A:H triad is therefore not supported by the description, which implies C:H/I:N/A:N at most; the 8.8 appears inflated relative to both Google's own triage and the stated behavior. No EPSS score, KEV listing, POC, or SSVC data is provided. Exploitation status is 'no public exploit identified at time of analysis.' Realistically this is a low-to-moderate priority browser information-disclosure bug that requires user interaction (victim must load a crafted page), not a wormable critical - treat the 8.8 as an outlier and defer to the vendor 'Low' rating and confidentiality-only description. Patch to 155.0.8059.39+ via normal Chrome update cadence; no emergency response indicated by available signals.

Exploit ScenarioDerived

An attacker hosts a crafted HTML page and lures a Chrome-for-Android user (prior to 155.0.8059.39) to visit it, for example via a link in a message, ad, or compromised site. When rendered, the page abuses an incorrect authorization check in Chrome's Transactions Platform component to read sensitive information the origin should not be able to access. No public exploit code has been identified, and the attack requires user interaction (UI:R) but no authentication (PR:N).

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

Google Chrome for Android prior to 155.0.8059.39 contains an incorrect-authorization flaw in its Transactions Platform component that lets an unauthenticated remote attacker read sensitive information from the browser by luring the victim into opening a crafted HTML page. No public exploit code has been identified at time of analysis and the issue is not reported as actively exploited, though the attack is fully remote (AV:N/PR:N) and requires only that a user on a vulnerable Android build load the attacker's page (UI:R). Note that public severity signals conflict: the vendor rates this Chromium security severity 'Low' and limits impact to information disclosure, while a widely replicated CVSS 3.1 base score of 8.8 lists high integrity and availability impact that is not supported by the description - our independent assessment scores it 8.8-adjacent only on confidentiality (C:H/I:N/A:N).

RemediationAI

Vendor-released patch: Chrome for Android 155.0.8059.39 fixes CVE-2026-106371. Update through Google Play (open the Play Store listing for Chrome and apply the pending update, or use managed Google Play / enterprise app-update policies to force the version), then confirm the build number in Chrome's Settings > About Chrome reports 155.0.8059.39 or later; because Android WebView/Chrome updates can lag on unmanaged devices, fleet-wide verification of the reported version is the only reliable confirmation of exposure. Chrome's Android release cadence means the update typically propagates automatically, so the practical gap is the window between disclosure and device uptake - prioritize devices with saved payment methods or heavy autofill usage, which are the most attractive targets for this class of authorization flaw. Before patching, no browser-level switch cleanly disables the vulnerable Transactions Platform path, so compensating controls are limited and carry trade-offs: turning off autofill for payment methods and deleting stored cards in Chrome settings reduces the value of the data reachable through the flaw at the cost of losing autofill convenience, and restricting browsing on affected devices to trusted/internal origins (or routing through a managed browser profile with URL allow-listing) lowers the chance a user is lured into loading an attacker-crafted page but degrades general usability. Network-layer content inspection is unlikely to reliably detect the attack because the malicious page is ordinary HTML, so user-awareness messaging about unsolicited links remains a secondary measure only. Track the vendor advisory at https://chromereleases.googleblog.com/2026/10/stable-channel-update-for-desktop_086471744.html for any revised severity or additional affected-version detail.

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 root cause is CWE-863 (Incorrect Authorization) in the component Chromium developers refer to as the 'Transactions Platform' - the internal surface that brokers transaction and payment-related data (for example, autofill/payment flows) between web content and the browser's privileged services. Because the authorization check on that boundary is missing or incorrect, a remote page is able to reach data it should not be permitted to read, resulting in disclosure of sensitive information rather than code execution or state corruption. The attack path is strictly network-delivered (AV:N) with no privileges required (PR:N) but does require user interaction (UI:R), meaning the victim must be induced to open the malicious HTML page; scope is unchanged (S:U). The CPE string provided (cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*) is over-broad and covers the Chrome product family generically - the description, the ENISA EUVD entry and the vendor advisory all scope the defect to Chrome on Android only, with Chrome 155.0.8059.39 as the first fixed release, so desktop Chrome is not identified as affected. The upstream Chromium issue (issues.chromium.org/issues/553326010) is the authoritative source for reproduction details and is typically access-restricted while the fix rolls out. The mismatch between the CVSS 3.1 vector's C:H/I:H/A:H and the description's information-disclosure-only impact is the most important analytical caveat here; treat the integrity/availability components of the published score as unsubstantiated by available evidence, consistent with the vendor's 'Low' severity rating.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Sources disagree (Low–High)
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

Remote crafted page with no auth (AV:N/PR:N) but victim must load it (UI:R); description states only information disclosure, so C:H with I:N/A:N.

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:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Red Hat 4.3 LOW

vuln.today treats the vendor’s rating as authoritative. A higher third-party CVSS (e.g. CISA-ADP) is shown for transparency but does not drive the headline severity.

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
UNKNOWN (no severity yet)
CVE Published
Oct 06, 2026 - 18:41 cve.org
HIGH 8.8

DescriptionCVE.org

Incorrect authorization in Transactions Platform in Google Chrome on on Android prior to 155.0.8059.39 allowed a remote attacker to obtain sensitive information via a crafted HTML page. (Chromium security severity: Low)

Executive ViewAI

Why It Matters

Google Chrome for Android versions before 155.0.8059.39 are affected by a high-severity incorrect-authorization flaw that could allow an unauthenticated remote attacker to read sensitive browser information if a user opens a crafted HTML page. This affects the mobile workforce using unpatched Android devices and creates a broad exposure surface because exploitation requires only user interaction, though no public exploit or active exploitation is currently identified. Leadership should prioritize validating Chrome for Android versions and driving the vendor patch across managed and BYOD devices to reduce confidentiality risk.

Business Impact: High
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 on Android 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
High
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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Adobe Flash Player before 13.0.0.292 and 14.x through 18.x before 18.0.0.160 on Windows and OS X and before 11.2.202.466

CVE-2015-3864 CRITICAL POC
10.0 Oct 01

Integer underflow in the MPEG4Extractor::parseChunk function in MPEG4Extractor.cpp in libstagefright in mediaserver in A

CVE-2013-4710 CRITICAL POC
9.3 Mar 03

Android 3.0 through 4.1.x on Disney Mobile, eAccess, KDDI, NTT DOCOMO, SoftBank, and other devices does not properly imp

CVE-2015-1538 CRITICAL POC
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Integer overflow in the SampleTable::setSampleToChunkParams function in SampleTable.cpp in libstagefright in Android bef

CVE-2024-21633 HIGH POC
7.8 Jan 03

Apktool versions 2.9.1 and prior contain a path traversal vulnerability when processing Android APK files. Malicious APK

CVE-2017-13156 HIGH POC
7.8 Dec 06

An elevation of privilege vulnerability in the Android system (art). Rated high severity (CVSS 7.8), this vulnerability

CVE-2016-2107 MEDIUM POC
5.9 May 05

The AES-NI implementation in OpenSSL before 1.0.1t and 1.0.2 before 1.0.2h does not consider memory allocation during a

CVE-2015-3106 CRITICAL POC
10.0 Jun 10

Use-after-free vulnerability in Adobe Flash Player before 13.0.0.292 and 14.x through 18.x before 18.0.0.160 on Windows

CVE-2015-3107 CRITICAL POC
10.0 Jun 10

Use-after-free vulnerability in Adobe Flash Player before 13.0.0.292 and 14.x through 18.x before 18.0.0.160 on Windows

CVE-2013-4787 CRITICAL POC
9.3 Jul 09

Android 1.6 Donut through 4.2 Jelly Bean does not properly check cryptographic signatures for applications, which allows

CVE-2014-7911 HIGH
7.2 Dec 15

luni/src/main/java/java/io/ObjectInputStream.java in the java.io.ObjectInputStream implementation in Android before 5.0.

CVE-2016-0801 CRITICAL POC
9.8 Feb 07

The Broadcom Wi-Fi driver in the kernel in Android 4.x before 4.4.4, 5.x before 5.1.1 LMY49G, and 6.x before 2016-02-01

Vendor StatusVendor

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