CVE-2023-6366Network attack vector

Stored script execution via Alert Center payload

Published Dec 14, 2023 · Updated May 21, 2025

Stored XSS in Progress Software Corporation WhatsUp Gold before 2023.1 allows remote authenticated users to execute JavaScript in a user's browser. Alert Center stores an attacker-crafted XSS payload without neutralizing it and later renders the value when a WhatsUp Gold user interacts with it. The attacker requires high privileges to store the value, and execution occurs only after another user interacts with the crafted Alert Center content.

CVSS severity7.6
High
EPSS probability0.51%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in Progress Software Corporation WhatsUp Gold before 2023.1 allows remote authenticated users to execute JavaScript in a user's browser. Alert Center stores an attacker-crafted XSS payload without neutralizing it and later renders the value when a WhatsUp Gold user interacts with it. The attacker requires high privileges to store the value, and execution occurs only after another user interacts with the crafted Alert Center content.

The record

CVE
CVE-2023-6366
Published
Dec 14, 2023
Updated
May 21, 2025
Vendor
Progress Software Corporation
Product
WhatsUp Gold
Classifications
CWE-79, T1189
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 14, 2023CVE publishedPublication date reported by the CVE source.
  2. May 21, 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=2022.0 <=2022.1
  2. Affected versionversion=2023.0 <2023.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Progress Software Corporation · WhatsUp Goldversion=2022.0 <=2022.1; version=2023.0 <2023.1

Published CVSS scores

7.6Progress Software CorporationCVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:H
5.4NIST National Vulnerability DatabaseCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

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
Privilegesauthenticated
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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