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.
Published: 2026-01-05
Score: 6.5 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Fri, 30 Jan 2026 01:45:00 +0000

Type Values Removed Values Added
First Time appeared Mega-fence Project
Mega-fence Project mega-fence
CPEs cpe:2.3:a:mega-fence_project:mega-fence:*:*:*:*:*:*:*:*
Vendors & Products Mega-fence Project
Mega-fence Project mega-fence

Tue, 06 Jan 2026 00:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Mon, 05 Jan 2026 21:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-807
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N'}


Mon, 05 Jan 2026 16:15:00 +0000

Type Values Removed Values Added
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.
References

Subscriptions

Mega-fence Project Mega-fence
cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-01-05T21:08:06.488Z

Reserved: 2025-11-18T00:00:00.000Z

Link: CVE-2025-65328

cve-icon Vulnrichment

Updated: 2026-01-05T21:03:06.165Z

cve-icon NVD

Status : Analyzed

Published: 2026-01-05T16:15:42.763

Modified: 2026-01-30T01:35:38.287

Link: CVE-2025-65328

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses