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Ubuntu Linux CVE-2026-95309

| EUVDEUVD-2026-89160 MEDIUM
User Interface (UI) Misrepresentation of Critical Information (CWE-451)
2026-09-23 vendor:ubuntu GHSA-4fxr-2f23-gq5w
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
    Insufficient data to construct attack chain
  2. Exploit
    Retrieve Ubuntu Security Notice for affected package
  3. Impact
    Determine attack vector and impact

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A06:2025 - Insecure Design
ASVS 5.0
V3 - Web Frontend Security UI security representation
Exploitation Conditions

Cannot be determined - the description is empty and no CVSS vector is provided, so required product features, protocols, configuration settings, deployment modes, authentication level, and user-interaction prerequisites are all unknown. Authentication requirements are not confirmed from available data. The underlying Ubuntu Security Notice must be consulted to establish the affected package and any preconditions that limit or enable exploitation.

Impact

Risk cannot be meaningfully assessed from the provided data. The only intelligence available is that this CVE was reported by the Ubuntu vendor channel (vendor:ubuntu, typically an Ubuntu Security Notice); there is NO description, NO CVSS base score or vector, NO CWE, NO EPSS probability, NO CISA KEV listing, and NO POC indicator. Because the CVSS vector is missing, attack vector, complexity, privilege, and user-interaction cannot be evaluated, and the automatable/technical-impact dimensions of an SSVC decision cannot be filled in. There is therefore no basis to rank this as either a genuine priority or a high-CVSS-but-low-real-risk issue. No exploitation signal is present in the input, so per the precision rules this is treated as 'no public exploit identified at time of analysis.' A security team should retrieve the underlying Ubuntu Security Notice / USN and the upstream advisory to obtain the affected package, CVSS vector, and fix version before making any prioritization decision.

Exploit ScenarioDerived

No exploit scenario can be constructed because the vulnerability class, affected component, and attack vector are all absent from the provided data. The report originates from an Ubuntu security channel, which implies a fix or advisory for some Ubuntu-packaged component, but the specific mechanism is unknown. No POC is indicated in the input.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
Patch available 0.3% exploitation probability (EPSS)

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AnalysisAIv1 – Sep 24, 2026

CVE-2026-95309 is recorded in this dataset only as reported by vendor:ubuntu, with an empty description, no CVSS score or vector, no CWE mapping, no references, no EPSS or KEV signal, and no patch metadata. Because the affected Ubuntu package, subsystem, and deployment context are all unknown, the impact cannot be characterized and risk cannot be meaningfully assessed from the provided data. No public exploit code has been identified at time of analysis, and there is no confirmed evidence of exploitation; this reflects absence of intelligence rather than confirmed safety. The originating Ubuntu Security Notice (USN) must be retrieved to establish whether the issue is a local privilege escalation, a remote service flaw, or a lower-severity hardening gap before any triage decision is made.

RemediationAI

No vendor-released patch or fix version data was provided in the available intelligence, and no compensating-control detail can be responsibly specified while the affected package, attack vector, and prerequisites remain unknown, since any suggested workaround could be irrelevant or harmful. The immediate action is to retrieve the authoritative source: locate the Ubuntu Security Notice referenced by the vendor:ubuntu attribution via Canonical's security notices page (https://ubuntu.com/security/notices) and the CVE entry on the Ubuntu CVE tracker (https://ubuntu.com/security/CVE-2026-95309) to obtain the affected package, fixed version, and any stated mitigations. Once the package is known, standard Ubuntu remediation applies: refresh package metadata and apply updates on supported releases (for example apt update && apt upgrade, or apt install --only-upgrade <package>), then confirm the installed version with dpkg -l and dpkg --compare-versions against the fixed version stated in the notice, and restart any affected services or reboot if a core library such as libc, openssl, or systemd is in scope. In the interim, treat patch status as unknown rather than as confirmed-vulnerable or confirmed-safe, and prioritize by exposure once the Ubuntu notice clarifies the attack vector; continue monitoring the Canonical notices feed and the CVE record for publication of the description, CVSS vector, and patch references.

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

No technical detail is available for this identifier. The only structured data point is the reporting source, vendor:ubuntu, which indicates the item originates from Canonical's Ubuntu Security Notice process rather than from an upstream CVE assignment with a published description. No CPE strings were supplied, so the affected package, version range, and architecture cannot be pinned down; Ubuntu advisories typically cover a source package plus its per-release binary packages across supported LTS and interim releases, so the blast radius could range from a single userspace utility to a core library used by hundreds of dependent packages. No CWE was provided, so the root-cause class (for example memory corruption, path traversal, improper authorization, or denial of service) is undetermined. No CVSS vector is present, which also means authentication requirements, attack vector, and user-interaction prerequisites cannot be derived from available data; the independent assessment explicitly notes these are unknown and defers to the Ubuntu Security Notice.

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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:N/A:L
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
None
Availability
Low

Lifecycle Timeline

1
CVSS changed
Sep 29, 2026 - 19:22 NVD
5.4 (MEDIUM)

DescriptionCVE.org

[Unknown description]

Threat Intelligence Overview

EPSS Score
0.3%
Top 85% exploitable
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 0.3%
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
Medium

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

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.

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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