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HPE OneView CVE-2026-76719

| EUVDEUVD-2026-88698 HIGH
Cross-site Scripting (XSS) (CWE-79)
2026-09-29 hpe GHSA-86x6-mvhx-x4gm
8.2
CVSS 3.1 · Vendor: hpe
View

Attack ChainAIDerived

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

  1. Access
    Craft malicious script payload
  2. Delivery
    Inject into HPE OneView field/parameter
  3. Exploit
    Admin views affected page
  4. Execution
    Script executes in admin session
  5. Impact
    Hijack session / exfiltrate data

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V1 - Encoding and Sanitization Output encoding, context-aware escaping
MITRE ATT&CK

2 techniques across 2 tactics: Initial Access, Execution

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Exploitation Conditions

Requires the HPE OneView web management interface to be reachable by the attacker's crafted input and, critically, requires a legitimate authenticated user (typically an administrator) to view or interact with the attacker-controlled content (UI:R) for the injected script to execute. No attacker authentication is needed to plant the payload (PR:N), but the scope-changed impact (S:C, C:H) depends on the victim's session privilege. Exploitation is limited by this mandatory victim interaction, making it opportunistic/targeted rather than fully automatable; no non-default configuration is indicated as required by the sparse description.

Impact

The CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N, base 8.2) describes a reflected/stored XSS (CWE-79) reachable over the network with low complexity and no attacker authentication, but requiring victim interaction (UI:R) and crossing a security scope boundary (S:C) - meaning attacker-controlled script executes in the browser context of a legitimate, likely privileged, HPE OneView user. The high confidentiality impact (C:H) reflects that hijacking an authenticated administrator session in an infrastructure-management console can expose credentials, tokens, and managed-server data; integrity is only low (I:L) and availability is unaffected (A:N). Real-world urgency is tempered because no exploitation signals accompany the report: there is no CISA KEV listing, no EPSS score supplied, and no public POC - so this is not confirmed active exploitation, just a vendor-disclosed weakness. The mandatory UI:R condition means an attacker must lure or wait for a victim to interact with malicious content, making this targeted rather than mass-automatable. Net: a genuinely serious flaw given the privileged admin context, but priority is moderate rather than emergency because exploitation depends on user interaction and no in-the-wild activity is evidenced.

Exploit ScenarioDerived

An attacker crafts input containing malicious JavaScript that HPE OneView renders unsanitized in a page viewed by an authenticated administrator; when the admin views that content, the script runs in their session and steals the session token or performs actions as that admin. No public exploit code has been identified, and the attack requires the victim admin to load the malicious content (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 – Sep 29, 2026

Cross-site scripting (CWE-79) in HPE OneView (CVSS 3.1 base 8.2) lets remote attackers with no authentication of their own plant script that executes inside the browser session of a logged-in OneView user, which the assessed vector (AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N) indicates can escalate into session hijacking, theft of data visible to that user, or other unauthorized actions performed with the victim's privileges. Because the vector requires user interaction (UI:R), successful exploitation depends on a legitimate - typically administrative - user viewing or interacting with attacker-controlled content, making it opportunistic or targeted rather than fully automatable; the scope-changed, high-confidentiality impact means the consequences are bounded by the victim's session privilege. No public exploit code has been identified at time of analysis, and there is no indication of confirmed active exploitation; the CPE entry uses a wildcard version, so all OneView versions should be treated as potentially affected until HPE confirms fixed builds.

RemediationAI

No vendor-released patch was identified in the provided data, so the primary action is to check the HPE Security Bulletin (https://support.hpe.com/hpesc/public/docDisplay?docId=hpesbgn05140en_us&docLocale=en_US) for the fixed OneView build and upgrade to that revision as soon as it is published. Until an upgrade is applied, treat the OneView management interface as an attack surface: restrict reachability of the web UI to a dedicated administrative network or VPN and block it from general user and internet-facing networks, accepting that this impairs remote administration and may complicate legitimate operator workflows. Because exploitation requires a privileged user to interact with attacker-controlled content (UI:R), reinforce browser-side hygiene for OneView administrators - do not follow untrusted links or open untrusted pages while authenticated to OneView, log out of the console when not in use, and use a separate browser profile or dedicated jump host so a hijacked session cannot be chained to other systems. Where the appliance or fronting proxy supports it, enforce a restrictive Content-Security-Policy and enable HttpOnly/SameSite session cookies as compensating controls; these reduce script execution and cookie theft but do not eliminate the underlying output-encoding defect and must not be treated as a substitute for the vendor fix. Monitor HPE OneView audit and web access logs for anomalous requests containing script payloads and for unexpected administrative actions performed under valid sessions, and rotate administrative credentials if compromise is suspected.

Affected VersionsENISA

HPE OneView 0 <11.40

Affected Packages

euvd hpe_oneview fix: 11.40

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 an improper neutralization of user-supplied input in generated web output - CWE-79 cross-site scripting - within the HPE OneView web management interface, which administrators use to manage converged infrastructure (compute, storage, networking and profiles). The CVSS vector's S:C (scope changed) component is characteristic of XSS: the vulnerable component is the web application, but the impacted component is the victim's browser session and everything reachable through it, hence confidentiality is rated High (C:H) while integrity is rated Low (I:L) because the attacker's direct influence is limited to actions the victim's session can perform. AV:N/AC:L/PR:N reflects that the payload can be delivered over the network with no complexity and without the attacker holding any OneView credentials, while UI:R captures the essential prerequisite that a legitimate authenticated user must render or interact with the injected content for execution to occur. The affected CPE, cpe:2.3:a:hewlett_packard_enterprise:hpe_oneview:*:*:*:*:*:*:*:*, carries a wildcard version, so the dataset does not narrow the vulnerable release set; the sparse description does not indicate any non-default configuration requirement. The accompanying references are limited to the HPE Security Bulletin (hpesbgn05140en_us), which is the authoritative source for the precise vulnerable and fixed revisions.

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Severity by source

Vendor (hpe) PRIMARY 8.2 HIGH
AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N
vuln.today AI 8.2 HIGH

Network-reachable XSS needing no attacker auth (PR:N) but victim interaction (UI:R); script runs in victim's session crossing scope (S:C) enabling session/data theft (C:H), minor integrity (I:L), no availability impact.

3.1 AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N
4.0 AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (hpe).

CVSS VectorVendor: hpe

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

Lifecycle Timeline

2
Patch available
Sep 29, 2026 - 11:01 EUVD
CVE Published
Sep 29, 2026 - 10:02 cve.org
HIGH 8.2

DescriptionCVE.org

A security vulnerability in HPE OneView may be exploited remotely to perform session hijacking, data theft or other unauthorized actions.

Executive ViewAI

Why It Matters

HPE OneView, the management platform used to administer the organization's HPE server, storage, and networking estate, is affected by a high-severity cross-site scripting flaw for which no vendor patch is currently available. An attacker needs no credentials of their own but must convince a logged-in OneView user - very likely an administrator with broad infrastructure privileges - to interact with malicious content, after which the attacker can operate inside that victim's session, exposing sensitive infrastructure data and enabling unauthorized changes under the victim's authority. Because OneView is a high-value control plane whose compromise could cascade into the underlying compute and storage environment, leadership should treat this as a management-plane risk requiring immediate interim mitigations rather than routine patching.

Business Impact: High
Compensating Controls

No vendor-released patch identified at time of analysis. Interim mitigations: isolate OneView management interfaces from general and internet-facing networks; require MFA and enforce least-privilege roles; reduce idle session timeouts; deploy WAF/URL filtering or browser isolation for administrative endpoints; monitor OneView and identity logs for anomalous admin session activity; and reinforce user awareness against phishing and untrusted content. Exploitation is unauthenticated from the attacker's side but requires victim user interaction (UI:R), and no public exploit identified at time of analysis.

Threat Intelligence Overview

EPSS Score
0.2%
Top 93% exploitable
Prevalence
Medium
HPE infrastructure lifecycle-management console for ProLiant/Synergy, common in HPE server shops
Data Quality
4 sources
Confidence: Medium

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

41
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +41
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Cross-Site Scripting occurs when an application accepts untrusted data and sends it to a web browser without proper validation or encoding.

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