9

CVE-2026-73700: arubanetworks fabric_composer Cross-site Scripting

CVSS: 9.0v3.1CriticalAnalyzed
Published 01-09-2026Last modified 02-09-2026
Open JSON

Vulnerability summary

CVE-2026-73700 is a critical (CVSS 9.0) Cross-site Scripting vulnerability in arubanetworks fabric_composer. EPSS estimates a 0.42% chance of exploitation in the next 30 days, higher than 35.1% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.0/10
010
Critical · v3.1 (CVE.org)
EPSS score
0.42%
0%100%
Low · +0.11 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 01-09-2026
    PublishedVulnerability first disclosed.
  2. 02-09-2026
    Last modifiedVulnerability information updated.

Description

A vulnerability in the web-based management interface of HPE Networking Fabric Composer could allow an authenticated low privilege operator user to conduct a stored cross-site scripting (XSS) attack against an administrative 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.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.42%

Chance of exploitation in the next 30 days

Percentile

35%

Versus all other CVEs

30-day change

+0.11 pp

From 0.31% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.42%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Arubanetworks1 product
Hewlett packard enterprise (hpe)1 product

2 vendors · 2 products

References

1 links