PatchTheCVECVE-2026-73700: A vulnerability in the web-based management interface of HPE Networking Fabric Composer could allow an authent
CVE-2026-73700 is a critical-severity flaw (CVSS 9.0) affecting fabric composer. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
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.
Why this priority
- Critical severity
A fixed release or distro patch exists.
Risk facts
| CVSS score | 9.0 (Critical) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | Low |
| User interaction | Required |
| EPSS exploit chance | 0.4% (top 64%) |
| CISA exploited list | No |
| Weakness | CWE-79 |
| Published | 2026-09-01 |
| Last modified | 2026-09-02 |
Last updated 2026-09-02 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2026-73700?
fabric composer: upgrade to 7.3.4. Exact commands for each OS are on this page.
Is CVE-2026-73700 being exploited?
CVE-2026-73700 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2026-73700 affect?
CVE-2026-73700 affects fabric composer. Severity is critical (CVSS 9.0). 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 int
How urgent is CVE-2026-73700?
Priority 41/100. Critical severity
Related CVEs
- CVE-2026-19766 CRITICAL 9.6 UPGRADE An authentication bypass vulnerability exists in the underlying operating system of HPE Networking Fabric Comp
- CVE-2026-73712 HIGH 8.1 UPGRADE A vulnerability in the API of HPE Networking Fabric Composer could allow an unauthenticated remote attacker to
- CVE-2026-73728 MEDIUM 6.5 UPGRADE Denial-of-service vulnerabilities exist in the API of HPE Networking Fabric Composer that could allow an authe
- CVE-2026-73729 MEDIUM 6.5 UPGRADE A vulnerability in the underlying operating system of HPE Networking Fabric Composer could allow an authentica
- CVE-2026-73730 MEDIUM 6.5 UPGRADE A privilege escalation vulnerability exists in the API of HPE Networking Fabric Composer