CVE-2025-34309 IPFire < v2.29 Stored XSS via Dynamic DNS Host

Q: What is CVE-2025-34309?

CVE-2025-34309 is a medium-severity cross-site scripting vulnerability in IPFire.org IPFire, published on 28 Oct 2025. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

Q: Is CVE-2025-34309 being exploited?

There is no known exploitation of CVE-2025-34309 in the wild and no public exploit code.

Q: How do I fix CVE-2025-34309?

No fix has been published for CVE-2025-34309 yet. Limit exposure of the affected software until one is available.

Medium 5.1 Published 28 Oct 2025 Updated 28 Oct 2025

Authenticated attackers can inject JavaScript via Dynamic DNS parameters, leading to script execution in other users' browsers.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2025-34309?

CVE-2025-34309 is a medium-severity cross-site scripting vulnerability in IPFire.org IPFire, published on 28 Oct 2025. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

Official 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.

Weakness: CWE-79

Which versions are affected by CVE-2025-34309?

It affects 1 product.

Products include Ipfire Ipfire.

How do I fix CVE-2025-34309?

No fix has been published for CVE-2025-34309 yet. Limit exposure of the affected software until one is available.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2025-34309 being exploited?

There is no known exploitation of CVE-2025-34309 in the wild and no public exploit code.

Sources

Also known as GHSA-2wmf-f2cc-qq97.