CVE-2025-34305: ipfire XSS (CVSS 5.4)

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.

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CVSS v3.1 Score

5.4

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Weakness Type (CWE)

CWE-79 Cross-site Scripting (XSS)

Affected Products

Vendor	Product	Versions
ipfire	ipfire	< 2.29
ipfire	ipfire	All
ipfire	ipfire	All
ipfire	ipfire	All
ipfire	ipfire	All
ipfire	ipfire	All
ipfire	ipfire	All
ipfire	ipfire	All
ipfire	ipfire	All
ipfire	ipfire	All
ipfire	ipfire	All
ipfire	ipfire	All
ipfire	ipfire	All
ipfire	ipfire	All
ipfire	ipfire	All
ipfire	ipfire	All

References

Other References

https://bugzilla.ipfire.org/show_bug.cgi?id=13880 https://www.ipfire.org/blog/ipfire-2-29-core-update-198-released https://www.vulncheck.com/advisories/ipfire-stored-xss-via-multiple-methods-in-cleanhtml

Frequently Asked Questions

What is CVE-2025-34305? +

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. It has a CVSS v3.1 base score of 5.4 (MEDIUM).

How severe is CVE-2025-34305? +

CVE-2025-34305 has a CVSS v3.1 score of 5.4 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-34305? +

CVE-2025-34305 affects products from ipfire, specifically: ipfire. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-34305? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2025-34305