CVE-2019-25398 IPFire 2.21 Core Update 127 Cross-Site Scripting via ovpnmain.cgi

What is CVE-2019-25398?

CVE-2019-25398 is a medium-severity cross-site scripting vulnerability in IPFire, published on 18 Feb 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

IPFire 2.21 Core Update 127 contains multiple cross-site scripting vulnerabilities in the ovpnmain.cgi script that allow attackers to inject malicious scripts through VPN configuration parameters. Attackers can submit POST requests with script payloads in parameters like VPN_IP, DMTU, ccdname, ccdsubnet, DOVPN_SUBNET, DHCP_DOMAIN, DHCP_DNS, DHCP_WINS, ROUTES_PUSH, FRAGMENT, KEEPALIVE_1, and KEEPALIVE_2 to execute arbitrary JavaScript in administrator browsers.

Weakness: CWE-79

Which versions are affected by CVE-2019-25398?

It affects 1 product.

Products include Ipfire Ipfire.

How do I fix CVE-2019-25398?

No fix has been published for CVE-2019-25398 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-2019-25398 being exploited?

There is no known exploitation of CVE-2019-25398 in the wild and no public exploit code.

Other vulnerabilities in IPFire

• CVE-2021-33393 Privilege escalation in n/a High 8.8
• CVE-2018-16232 Command injection in n/a High 8.8
• CVE-2017-9757 Command injection in n/a High 8.8
• CVE-2025-34311 IPFire < v2.29 Command Injection via Proxy Report Creation High 8.7
• CVE-2025-34312 IPFire < v2.29 Command Injection via URL Filter Blacklist High 8.7

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-pgfc-hgqj-gfc4.