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CVE-2025-34309VulnerabilityPublished

CVE-2025-34309: IPFire · XSS or 'Cross-site Scripting'

Affects IPFireSource CVE Database V5

0

Not known to be exploited · CVSS 5.1 Medium : upgrade to 2.29 when convenient.

Data as of 26 Oct 2026, 06:26 UTC

CVSS 4.0 base score
5.1Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
5.3% chance of exploitation in 30 days – higher than 92% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 2.29
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

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 28 Oct 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-26.

What to do

Upgrade IPFire to 2.29.

Affected software

ProductAffectedFixed in
IPFire.org IPFireAffected
  • =0
  • <2.29
Fixed in
  • 2.29

AI-suggested

European organizations should immediately upgrade IPFire installations to version 2.29 (Core Update 198) or later, where this vulnerability is addressed. If upgrading is not immediately feasible, administrators should restrict access to the IPFire web interface to trusted networks and enforce strong authentication mechanisms, including multi-factor authentication, to reduce the risk of credential compromise. Regularly audit Dynamic DNS host entries for suspicious or unexpected content in SERVICE, LOGIN, and PASSWORD fields. Implement web application firewall (WAF) rules to detect and block common XSS payloads targeting the /cgi-bin/ddns.cgi endpoint. Additionally, educate administrators about the risks of stored XSS and encourage cautious handling of Dynamic DNS configurations. Monitoring logs for unusual POST requests to the ddns.cgi endpoint can help detect exploitation attempts. Finally, isolate IPFire management interfaces from general user networks to limit exposure.

Description

IPFire versions prior to 2.29 (Core Update 198) contain a stored cross-site scripting (XSS) vulnerability that allows an authenticated attacker to inject arbitrary JavaScript code through the SERVICE, LOGIN, and PASSWORD parameters when creating or editing a Dynamic DNS host. When a new Dynamic DNS host is added, the application issues an HTTP POST request to /cgi-bin/ddns.cgi and saves the values of the LOGIN, PASSWORD, and SERVICE parameters. The SERVICE value is displayed after the host entry is created, and the LOGIN and PASSWORD values are displayed when that host entry is edited. The values of these parameters are 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 or edit the affected Dynamic DNS entries.

References

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