CVE-2025-34303 IPFire < v2.29 Stored XSS via Whitelisted Host Creation
Authenticated attackers can inject JavaScript via whitelisted host remarks, 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-2025-34303?
CVE-2025-34303 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 IGNORE_ENTRY_REMARK parameter when adding a whitelisted host. When a whitelisted host is added, an HTTP POST request is sent to the Request-URI /cgi-bin/ids.cgi and the remark for the entry is provided in the IGNORE_ENTRY_REMARK parameter. The value of this parameter is stored and later rendered in the web interface without proper sanitization or encoding, allowing injected scripts to execute in the context of other users who view the affected whitelist entry.
Weakness: CWE-79
Which versions are affected by CVE-2025-34303?
It affects 1 product.
Products include Ipfire Ipfire.
How do I fix CVE-2025-34303?
No fix has been published for CVE-2025-34303 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-2025-34303 being exploited?
There is no known exploitation of CVE-2025-34303 in the wild and no public exploit code.
Other vulnerabilities in IPFire.org IPFire
Sources
Also known as GHSA-48rj-4wmq-xq7p.