CVE-2025-4294Network attack vector

Authenticated script execution via undisclosed web input

Published Jul 22, 2025 · Updated Jul 29, 2026

Cross-site scripting in HotelRunner B2B before 04.06.2025 allows remote authenticated users to run script in another user's browser. The CNA identifies improper neutralization during page generation but does not disclose the affected input, page, parameter, or output operation. Exploitation requires high-privilege access and user interaction; the published impact is limited to confidentiality and integrity effects, with no service interruption.

CVSS severity4.8
Medium
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site scripting in HotelRunner B2B before 04.06.2025 allows remote authenticated users to run script in another user's browser. The CNA identifies improper neutralization during page generation but does not disclose the affected input, page, parameter, or output operation. Exploitation requires high-privilege access and user interaction; the published impact is limited to confidentiality and integrity effects, with no service interruption.

The record

CVE
CVE-2025-4294
Published
Jul 22, 2025
Updated
Jul 29, 2026
Vendor
HotelRunner
Product
HotelRunner B2B Network
Classifications
CWE-79, CAPEC-63
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 22, 2025CVE publishedPublication date reported by the CVE source.
  2. Jul 29, 2026Record 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=0 <04.06.2025

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

HotelRunner · HotelRunner B2B Networkversion=0 <04.06.2025

Published CVSS scores

4.8TR-CERTCVSS:3.1/AV:N/AC:L/PR:H/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CAPEC-63Cross-Site Scripting (XSS)

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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