CVE-2025-3774Network attack vector

Stored XSS via unescaped forwarded IP header

Published Jun 17, 2025 · Updated Apr 8, 2026

Stored XSS in Wise Chat 3.3.4 and earlier allows remote attackers to inject scripts through a crafted X-Forwarded-For header. The WiseChatKicksTab administration view prints the stored forwarded IP value without sanitizing the header or escaping the HTML output. No authentication is required to submit the header, but the payload executes when a user accesses the affected administration page.

CVSS severity7.2
High
EPSS probability0.27%
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 Wise Chat 3.3.4 and earlier allows remote attackers to inject scripts through a crafted X-Forwarded-For header. The WiseChatKicksTab administration view prints the stored forwarded IP value without sanitizing the header or escaping the HTML output. No authentication is required to submit the header, but the payload executes when a user accesses the affected administration page.

The record

CVE
CVE-2025-3774
Published
Jun 17, 2025
Updated
Apr 8, 2026
Vendor
Marcin Ławrowski
Product
Wise Chat
Classifications
CWE-79, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 17, 2025CVE publishedPublication date reported by the CVE source.
  2. Apr 8, 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 <=3.3.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Marcin Ławrowski · Wise Chatversion=0 <=3.3.4

Published CVSS scores

7.2WordfenceCVSS:3.1/AV:N/AC:L/PR:N/UI:N/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')
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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