CVE-2022-39187Network attack vector

Browser script execution via unspecified reflected input

Published Jan 12, 2023 · Updated Apr 8, 2025

Reflected cross-site scripting in Maxum Development Corp. Rumpus 9.0.7.1 allows remote attackers to run script in a victim's browser. The CNA and vendor reference do not disclose which request value is reflected or where output neutralization fails. Exploitation requires user interaction; successful script runs in the Rumpus origin and can read or alter browser-accessible session data.

CVSS severity6.1
Medium
EPSS probability0.42%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Reflected cross-site scripting in Maxum Development Corp. Rumpus 9.0.7.1 allows remote attackers to run script in a victim's browser. The CNA and vendor reference do not disclose which request value is reflected or where output neutralization fails. Exploitation requires user interaction; successful script runs in the Rumpus origin and can read or alter browser-accessible session data.

The record

CVE
CVE-2022-39187
Published
Jan 12, 2023
Updated
Apr 8, 2025
Vendor
Maxum Development Corp.
Product
Rumpus
Classifications
CWE-79, CAPEC-591, T1059.007
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 12, 2023CVE publishedPublication date reported by the CVE source.
  2. Apr 8, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=latest <9.0.7.1*

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Maxum Development Corp. · Rumpusversion=latest <9.0.7.1*

Published CVSS scores

6.8Israel National Cyber DirectorateCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H
6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 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')
CAPEC-591Reflected XSS
T1059.007Command and Scripting Interpreter: JavaScript/JScript

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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo