BaseFortify

Publication date: 2025-10-28

Last updated on: 2025-11-03

Assigner: VulnCheck

Description

IPFire versions prior to 2.29 (Core Update 198) contain multiple stored cross-site scripting (XSS) vulnerabilities caused by a bug in the cleanhtml() function (/var/ipfire/header.pl) that fails to apply HTML-entity encoding to user input. When an authenticated user submits data to affected endpoints - for example, POST /cgi-bin/wakeonlan.cgi (CLIENT_COMMENT), /cgi-bin/dhcp.cgi (ADVOPT_DATA, FIX_REMARK, FIX_FILENAME, FIX_ROOTPATH), /cgi-bin/connscheduler.cgi (ACTION_COMMENT), /cgi-bin/dnsforward.cgi (REMARK), /cgi-bin/vpnmain.cgi (REMARK), or /cgi-bin/dns.cgi (REMARK) - the application calls escape() and HTML::Entities::encode_entities() but never assigns the sanitized result back to the output variable. The original unsanitized value is therefore stored and later rendered in the web interface without proper sanitation or encoding, allowing injected scripts to execute in the context of other users who view the affected entries.

CVSS Scores

EPSS Scores

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Meta Information

Published

2025-10-28

Last Modified

2025-11-03

Generated

2026-07-06

AI Q&A

2025-10-28

EPSS Evaluated

2026-07-05

NVD

CVE-2025-34305

Affected Vendors & Products

Vendor	Product	Version / Range
ipfire	ipfire	to 2.29 (exc)
ipfire	ipfire	2.29
ipfire	ipfire	2.29
ipfire	ipfire	2.29
ipfire	ipfire	2.29
ipfire	ipfire	2.29
ipfire	ipfire	2.29
ipfire	ipfire	2.29
ipfire	ipfire	2.29
ipfire	ipfire	2.29
ipfire	ipfire	2.29
ipfire	ipfire	2.29
ipfire	ipfire	2.29
ipfire	ipfire	2.29
ipfire	ipfire	2.29
ipfire	ipfire	2.29

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-79	The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

Attack-Flow Graph

Impact Analysis

This vulnerability can allow attackers to inject malicious scripts that execute in the context of other users who view the affected entries. This can lead to unauthorized actions, theft of session tokens, or other malicious activities within the web interface, potentially compromising user accounts or the system.

Executive Summary

This vulnerability is a stored cross-site scripting (XSS) issue in IPFire versions prior to 2.29 (Core Update 198). It occurs because the cleanhtml() function fails to properly encode user input before storing it. When authenticated users submit data to certain endpoints, the application attempts to sanitize the input but does not save the sanitized version. As a result, malicious scripts can be stored and later executed in the web interface when other users view the affected entries.

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