CVE-2026-111385

Nezha 2.1.0 before 2.3.15 Host Header Injection via MCP Transfer Tools

Published Oct 16, 2026 CVSS 4.0 · 6.3 Medium EPSS < 1% KEV · Not listed
Description
Nezha from 2.1.0 before 2.3.15 contains a host header injection vulnerability in mintTransferTool that builds fs.download_url and fs.upload_url transfer URLs from the unvalidated Host header. Attackers who control the Host header seen on a victim's MCP request can redirect file uploads or capture one-time download tokens and replay them to exfiltrate files.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Nezhahq
Nezhahq nezha
Vendors & Products Nezhahq
Nezhahq nezha
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description Nezha from 2.1.0 before 2.3.15 contains a host header injection vulnerability in mintTransferTool that builds fs.download_url and fs.upload_url transfer URLs from the unvalidated Host header. Attackers who control the Host header seen on a victim's MCP request can redirect file uploads or capture one-time download tokens and replay them to exfiltrate files.
Title Nezha 2.1.0 before 2.3.15 Host Header Injection via MCP Transfer Tools
Weaknesses CWE-601
References
Metrics cvssV3_1

{'score': 4.8, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N'}

cvssV4_0

{'score': 6.3, 'vector': 'CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
VulnCheck
Published
Updated
Oct 21, 2026, 2:07 AM
Reserved
Oct 15, 2026, 9:55 PM
Status
Deferred
Published
Oct 16, 2026, 3:18 AM
Modified
Oct 21, 2026, 3:17 AM