Medium 5.1Published Oct 28, 2025

CVE-2025-34305IPFire < v2.29 Stored XSS via Multiple Methods in cleanhtml()

Updated under an hour ago (Oct 28, 2026, 4:30 AM ET)

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It affects IPFire.org IPFire and 1 other product. Add what you run to find out whether that includes you.

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Every CVE for IPFire.org IPFire

Exploited in the last 30 days

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: 5.1 MEDIUM (v4.0, CNA)CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
Weakness (CWE): CWE-79
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulnCheck
NVD analysis: Analyzed
Record last updated: Oct 29, 2025
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

IPFire.org IPFire ipfire.org:ipfire (from the name)	before 2.29 (Core Update 198)	CNA record
ipfire ipfire ipfire:ipfire	before 2.29; 2.29; 2.29; 2.29; 2.29; 2.29; 2.29; 2.29; and 8 more ranges	NVD

References

References

https://www.ipfire.org/blog/ipfire-2-29-core-update-198-released	vendor-advisory, patch, release-notes
https://bugzilla.ipfire.org/show_bug.cgi?id=13880	issue-tracking, third-party-advisory
https://www.vulncheck.com/advisories/ipfire-stored-xss-via-multiple-methods-in-cleanhtml	third-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.