CVE-2026-111385

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.

CVSS v3 4.8 MEDIUM

4.8^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.2 / Impact : 2.5

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/nezhahq/nezha/commit/36b742a7e9a81ed782363dd19efd77b7030fbd0f
https://github.com/nezhahq/nezha/commit/c726930833937a0aebb2a924064f236faea889f6
https://github.com/nezhahq/nezha/security/advisories/GHSA-rj3w-jrj7-x7c3
https://www.vulncheck.com/advisories/nezha-2.1.0-before-2.3.15-host-header-injection-via-mcp-transfer-tools
https://github.com/nezhahq/nezha/security/advisories/GHSA-rj3w-jrj7-x7c3

Configurations

No configuration.

History

21 Oct 2026, 03:17

Type	Values Removed	Values Added
References	~~() https://github.com/nezhahq/nezha/security/advisories/GHSA-rj3w-jrj7-x7c3 -~~	() https://github.com/nezhahq/nezha/security/advisories/GHSA-rj3w-jrj7-x7c3 -

16 Oct 2026, 03:18

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-16 03:18

Updated : 2026-10-21 03:17

NVD link : CVE-2026-111385

Mitre link : CVE-2026-111385

CVE.ORG link : CVE-2026-111385

JSON object : View

Products Affected

No product.

CWE

CWE-601

URL Redirection to Untrusted Site ('Open Redirect')

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