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HPE Fabric Composer CVE-2026-73731

| EUVDEUVD-2026-69458 MEDIUM
Cross-site Scripting (XSS) (CWE-79)
2026-09-01 hpe GHSA-chcg-hgwr-hmx9
6.1
CVSS 3.1 · Vendor: hpe
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Severity by source

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

Provided vector is accurate: reflected XSS mandates victim interaction (UI:R), browser scope change applies (S:C), no attacker credentials needed (PR:N), and no availability impact.

3.1 AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
4.0 AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/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
Low
Integrity
Low
Availability
None

Lifecycle Timeline

1
Analysis Generated
Sep 01, 2026 - 20:47 vuln.today

DescriptionCVE.org

A vulnerability in the web-based management interface of HPE Networking Fabric Composer could allow an unauthenticated remote attacker to conduct a reflected cross-site scripting (XSS) attack against a user of the interface. A successful exploit could allow an attacker to execute arbitrary script code in a victim's browser in the context of the affected interface.

AnalysisAI

Reflected cross-site scripting in the HPE Networking Fabric Composer web management interface allows unauthenticated remote attackers to inject and execute arbitrary JavaScript in a victim administrator's browser by tricking them into following a crafted URL. The CVSS Scope:Changed metric confirms the injected script executes across the browser security boundary, enabling session token theft, credential harvesting, or unauthorized administrative actions on behalf of the victim. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
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Delivery
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Exploit
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Execution
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Persist
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Impact
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Vulnerability AssessmentAI

Exploitation The target must be an authenticated user of the HPE Fabric Composer web management interface who actively clicks or follows a crafted URL delivered by the attacker (UI:R is mandatory - the attack cannot succeed without this step). … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 6.1 Medium score reflects a measured but real threat: AV:N and AC:L indicate easy network delivery with no special conditions, while PR:N confirms no attacker credentials are required. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation Consult HPE security bulletin hpesbnw05133en_us (https://support.hpe.com/hpesc/public/docDisplay?docId=hpesbnw05133en_us&docLocale=en_US) for the specific patched version - no exact fix version is confirmed in the available data and inventing one would be inappropriate. … Detailed patch versions, workarounds, and compensating controls in full report.

Threat intelligence, references, and detailed analysis are available after sign-in.

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CVE-2026-73731 vulnerability details – vuln.today

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