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Google Chrome CVE-2026-95352

| EUVDEUVD-2026-89153 MEDIUM
Incorrect Authorization (CWE-863)
2026-09-23 vendor:ubuntu GHSA-hjvw-qq89-h873
Medium
Disputed · 5.4 Vendor: vendor:ubuntu
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Attack ChainAIDerived

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

  1. Access
    Lure user to malicious web page
  2. Exploit
    Deliver crafted web content
  3. Execution
    Trigger undisclosed Chrome flaw
  4. Impact
    Impact undetermined (verify advisory)

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

Cannot be specified from the available data - the vulnerability description is UNKNOWN and no CVSS vector is provided, so required privileges, user interaction, protocol, and configuration prerequisites are undetermined. Based only on the affected product (Google Chrome desktop stable channel), exploitation would realistically require a user running an unpatched Chrome build to process attacker-controlled web content, but this is unconfirmed. The one clear limiting factor is that a vendor fix is already available, so exploitation is constrained to un-updated installations. Consult the upstream Chrome Releases advisory to establish exact conditions.

Impact

Signal availability for this CVE is severely limited: there is no CVSS base score or vector, no CWE, no EPSS probability, no SSVC decision data, no KEV listing, and no known public POC. The only hard facts are that the issue affects Google Chrome desktop (stable channel), a fix is available from the vendor, and it originates from the September 2026 Chrome Releases blog (relayed via Ubuntu's tracker). Because the entire vulnerability description is UNKNOWN, the vulnerability class, attack vector, and impact cannot be determined from the provided data and MUST be verified against the upstream Chrome Releases advisory. Risk cannot be quantified from the inputs alone; however, the mitigating context is that a patch already exists and there is no evidence of exploitation (not in KEV, no POC). The overriding real-world risk driver here is prevalence, not confirmed severity: Chrome is ubiquitous, so even a moderate browser flaw has an enormous attack surface and should be patched promptly on a routine basis. Do NOT treat this as confirmed high-severity - treat it as an unscored, unpatched-until-you-update browser fix pending detail from the vendor advisory. EPSS/KEV absence is not evidence of safety, only of no observed mass exploitation at analysis time.

Exploit ScenarioDerived

No public exploit has been identified and the vulnerability details are undisclosed, so a concrete scenario cannot be responsibly constructed. Consistent with the typical Chrome desktop bug pattern, a plausible (unconfirmed) scenario is a user with an unpatched browser navigating to an attacker-controlled web page that triggers the flaw in the rendering/browser process. The specific mechanism, required interaction, and impact remain unknown pending the vendor advisory.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
Patch available 0.2% exploitation probability (EPSS)

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AnalysisAIv1 – Sep 24, 2026

Google Chrome's desktop stable channel is affected by an unspecified security defect that Google resolved in its September 2026 stable-channel release; no CVSS score, vector, CWE, EPSS probability, or technical description is available in the provided intelligence. Because the flaw is undocumented, the attack vector, required privileges, and user-interaction prerequisites cannot be confirmed from this data, though the affected product implies a browser-processing context in which a user would have to handle attacker-controlled content. A vendor-released patch is available and no public exploit code has been identified at time of analysis, so residual risk is effectively confined to unpatched installations.

RemediationAI

Vendor-released patch: Google shipped a fix in the September 2026 Chrome desktop stable-channel update; apply it by updating to the version named in the Chrome Releases advisory, which end users can trigger via chrome://settings/help or an enterprise update policy, and Ubuntu users should refresh the Chromium snap (snap refresh chromium) or the corresponding security update once published by Ubuntu. Because the vulnerable component is unidentified, no targeted configuration workaround can be recommended - disabling specific capabilities such as JavaScript or WebAssembly is not justified by the available evidence and would degrade functionality for no confirmed security gain. Where immediate patching is impractical, administrators can enforce Chrome auto-update and forced relaunch through Chrome Browser Cloud Management or the relevant platform update policy; the trade-off is disruption from forced browser restarts and possible loss of unsaved session state. Restricting general web access or applying strict content filtering offers partial exposure reduction but is operationally costly and unproven against this specific defect, and the authoritative condition and version details should be confirmed from the upstream advisory at http://chromereleases.googleblog.com/2026/09/stable-channel-update-for-desktop_0856730748.html.

Affected VersionsENISA

Chrome 154.0.8037.57 <154.0.8037.57

Affected Packages

euvd chrome fix: 154.0.8037.57

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 only substantive intelligence is a reference to Google's Chrome Releases blog stable-channel update for desktop, plus a record maintained by the Ubuntu security team as the reporting vendor. No CWE is supplied, so the root-cause class - memory-safety bug in the Blink renderer or V8 JavaScript engine, sandbox escape, insufficient validation, or a logic error in a browser subsystem - cannot be determined. No CPE strings were provided, so the affected build range must be inferred solely from the Chrome Releases advisory. Google's stable-channel releases typically bundle multiple fixes across the browser's multi-process architecture, where renderer compromise is contained by the sandbox and full impact requires a chained second vulnerability. In the absence of a description or CVSS vector, no assertion about whether exploitation is unauthenticated (PR:N) or requires privileges, and no assertion about user interaction, can be made from this dataset.

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Severity by source

Sources disagree (Low–Critical)
Vendor (vendor:ubuntu) PRIMARY 5.4 MEDIUM
AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
SUSE CRITICAL
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: vendor:ubuntu

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

Lifecycle Timeline

2
CVSS changed
Sep 30, 2026 - 13:22 NVD
5.4 (MEDIUM)
CVE Published
Sep 23, 2026 - 00:00 cve.org
MEDIUM

DescriptionCVE.org

[Unknown description]

Threat Intelligence Overview

EPSS Score
0.2%
Top 89% exploitable
Prevalence
Ubiquitous
Google Chrome is the dominant desktop browser across virtually all environments
Data Quality
3 sources
Confidence: Low

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 MEDIUM
CISA KEV No
Public POC No
EPSS 0.2%
Patch available Yes
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
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· derived
High

Priority Score

27
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +27
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.

Vendor StatusVendor

SUSE

Severity: Critical
Product Status
SUSE Package Hub 15 SP7 Fixed
openSUSE Leap 16.0 Fixed
openSUSE Tumbleweed Fixed
SUSE Package Hub 15 SP7 Affected

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