Vulnerability in Mega-Fence Project
CVE-2025-65328
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.003 (17.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 17th percentile — 17.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: +0.000
Affected products
Weakness classification (CWE)
References
- drive.proton.me/urls/MY05PVBFXG (Broken Link)
- raw.githubusercontent.com/p1aintext/CVE/main/CVE-2025-65328.md (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2025-65328?
- CVE-2025-65328 is a medium-severity vulnerability in Mega-Fence Project, classified under CWE-807. CVSS score: 6.5/10. Published 2026-01-05.
- How severe is CVE-2025-65328?
- Medium severity. CVSS v3 base score is 6.5 out of 10.