CVE-2023-31928Network attack vector

Browser script execution via PortSetting.html reflection

Published Aug 1, 2023 · Updated Feb 13, 2025

Reflected XSS in Brocade Fabric OS before 8.2.3f and 9.0.0 through 9.1.1d7 allows remote attackers to run JavaScript in a user's session. PortSetting.html reflects attacker-controlled input into a Webtools response without neutralizing it for browser execution. A target user must load the crafted response in Webtools; script execution is confined to that user's browser session.

CVSS severity6.1
Medium
EPSS probability0.48%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reflected XSS in Brocade Fabric OS before 8.2.3f and 9.0.0 through 9.1.1d7 allows remote attackers to run JavaScript in a user's session. PortSetting.html reflects attacker-controlled input into a Webtools response without neutralizing it for browser execution. A target user must load the crafted response in Webtools; script execution is confined to that user's browser session.

The record

CVE
CVE-2023-31928
Published
Aug 1, 2023
Updated
Feb 13, 2025
Vendor
Brocade Communications Systems
Product
Fabric OS
Classifications
CWE-79, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 1, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 13, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=before Brocade Fabric OS v9.2.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Brocade Communications Systems · Fabric OSversion=before Brocade Fabric OS v9.2.0

Published CVSS scores

6.1NIST National Vulnerability DatabaseCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
6.3Brocade Communications Systems, LLCCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1189Drive-by Compromise

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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