CVE-2025-65328 Security feature bypass in n/a
Attackers can spoof client IP addresses via X-Forwarded-For headers to bypass IP-based security controls in Mega-Fence deployments relying on this value.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-65328?
CVE-2025-65328 is a medium-severity vulnerability in n/a, published on 5 Jan 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Mega-Fence (webgate-lib.*) 25.1.914 and prior trusts the first value of the X-Forwarded-For (XFF) header as the client IP without validating a trusted proxy chain. An attacker can supply an arbitrary XFF value in a remote request to spoof the client IP, which is then propagated to security-relevant state (e.g., WG_CLIENT_IP cookie). Deployments that rely on this value for IP allowlists may be bypassed.
Weakness: CWE-807
Which versions are affected by CVE-2025-65328?
It affects 1 product.
Products include Mega-Fence Project Mega-Fence.
How do I fix CVE-2025-65328?
No fix has been published for CVE-2025-65328 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-65328 being exploited?
There is no known exploitation of CVE-2025-65328 in the wild and no public exploit code.
Sources
Also known as GHSA-6gh2-xjvw-7rh4.