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Ubuntu Linux CVE-2026-95291

| EUVDEUVD-2026-89223 MEDIUM
User Interface (UI) Misrepresentation of Critical Information (CWE-451)
2026-09-23 vendor:ubuntu GHSA-wwhm-868m-ghhx
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
    Attacker identifies affected Ubuntu package
  2. Exploit
    Details unavailable
  3. Impact
    Impact unknown

Vulnerability Assessment

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

Exploitation prerequisites cannot be determined. The description is empty, and no CVSS metrics (attack vector, complexity, privileges, or user interaction) are provided to indicate whether exploitation is remote or local, authenticated or unauthenticated, or dependent on a specific feature or configuration. The sole contextual clue is that Ubuntu reported the issue, suggesting the affected code is a package distributed with Ubuntu Linux; the exact package, feature, protocol, or deployment mode required is not stated in the available data and must be obtained from the forthcoming Ubuntu Security Notice or NVD entry.

Impact

Risk cannot be meaningfully assessed from the provided data. The description is '[Unknown description]', no CVSS base score or vector is supplied, no CWE is assigned, and there is no EPSS score, KEV entry, POC indicator, or SSVC decision data. The only intelligence signal is that the record was reported by vendor:ubuntu, which suggests the vulnerability affects a package shipped in the Ubuntu/Debian Linux ecosystem, but the specific component, affected versions, attack vector, and impact are all unknown. With no attack-vector, complexity, or privilege metrics available, it is impossible to distinguish a genuine high-priority remote flaw from a low-real-risk local or hard-to-reach issue. This CVE is effectively unassessable at time of analysis and must be re-triaged once Ubuntu (USN) or NVD publishes a description, CVSS vector, and affected-package list. No signals are conflicting because no signals are present; the correct posture is to treat severity as unknown and monitor for the Ubuntu Security Notice.

Exploit ScenarioDerived

No exploit scenario can be constructed because the vulnerable component, attack vector, and impact are all unknown. The report originates from Ubuntu's security process, implying an affected Linux distribution package, but no technical detail is available. No public exploit has been identified in the provided data.

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

An unidentified security weakness affects software distributed as part of Ubuntu Linux, based on a report filed by the vendor (Canonical/Ubuntu). Because the description, CVSS metrics, CWE, and CPE data are all absent, the specific impact, attack vector, and authentication requirements cannot be determined; exploitation prerequisites are unknown, and no public exploit code has been identified at time of analysis. Risk cannot be meaningfully assessed from the provided data, and the affected package, feature, or deployment mode must be confirmed through the forthcoming Ubuntu Security Notice or NVD entry before any exposure judgment is made.

RemediationAI

No vendor-released patch has been identified at time of analysis, and no fix version can be cited because neither the package nor the affected version range has been disclosed. The primary action is to track the Ubuntu Security Notice for this CVE at https://ubuntu.com/security/notices and the NVD entry for CVE-2026-95291, then apply the referenced package update as soon as it is published, typically via 'sudo apt update && sudo apt upgrade' or a targeted 'sudo apt install --only-upgrade <package>' once the package name is known. As an interim compensating control, keep automatic security updates enabled on Ubuntu systems ('unattended-upgrades' with the security pocket enabled) so the fix is applied without manual triage; the trade-off is that unattended upgrades can restart services unexpectedly and should be paired with reboot/maintenance policies. Administrators of internet-facing Ubuntu systems can additionally reduce exposure by restricting inbound access to services that are not required externally and by segmenting hosts pending triage, accepting the operational cost of reduced accessibility. Because exploitation prerequisites are unconfirmed, do not treat any single control such as firewall rules or authentication hardening as a proven mitigation; they are risk-reduction measures only until Canonical publishes the affected package and fix version.

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 specifics are available: the description field is empty, no CWE is assigned, no CPE strings are supplied, and no CVSS vector exists, so the root-cause class (for example memory corruption, injection, deserialization, or access-control failure) is undefined. The single contextual signal is the reporting source, vendor:ubuntu, which indicates the affected code is a package maintained and distributed through Ubuntu's archive and update channels rather than an independently distributed third-party product. This matters because Ubuntu advisories typically map to source packages (deb) and version ranges keyed to Ubuntu releases and pockets (main, universe, updates, ESM), so the eventual USN will be the authoritative source for the exact binary/source package name, the affected Ubuntu release series, and whether the fix lands as a stable release update or via Ubuntu Pro/ESM channels. Without that mapping, the technology stack, protocol, or subsystem involved remains unconfirmed.

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Severity by source

Sources disagree (Medium–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 8.8 HIGH

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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