CVE-2026-120323

MEDIUM 4.3

samanhappy MCPHub passthroughHeaders.ts information disclosure

CVSS Score

4.3

EPSS Score

0.0%

EPSS Percentile

0th

A security flaw has been discovered in samanhappy MCPHub up to 1.0.45/1.1.7. Impacted is an unknown function of the file src/utils/passthroughHeaders.ts. The manipulation of the argument passthroughHeaders results in information disclosure. The attack may be launched remotely. Upgrading to version 1.1.8 is recommended to address this issue. The patch is identified as 040f7b9ae004070bdfe5084cde6bc2c609f78e76. It is advisable to upgrade the affected component.

CWE	CWE-200 CWE-284
Vendor	samanhappy
Product	mcphub
Published	Nov 2, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N/E:X/RL:O/RC:C

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

samanhappy / MCPHub

1.0.0 1.0.1 1.0.2 1.0.3 1.0.4 1.0.5 1.0.6 1.0.7 1.0.8 1.0.9 1.0.10 1.0.11 1.0.12 1.0.13 1.0.14 1.0.15 1.0.16 1.0.17 1.0.18 1.0.19 1.0.20 1.0.21 1.0.22 1.0.23 1.0.24 1.0.25 1.0.26 1.0.27 1.0.28 1.0.29 1.0.30 1.0.31 1.0.32 1.0.33 1.0.34 1.0.35 1.0.36 1.0.37 1.0.38 1.0.39 1.0.40 1.0.41 1.0.42 1.0.43 1.0.44 1.0.45 1.1.0 1.1.1 1.1.2 1.1.3 1.1.4 1.1.5 1.1.6 1.1.7

References

NVD ↗ CVE.org ↗ EPSS Data ↗

vuldb.com: https://vuldb.com/vuln/429655 vuldb.com: https://vuldb.com/vuln/429655/cti vuldb.com: https://vuldb.com/cve/CVE-2026-120323 vuldb.com: https://vuldb.com/submit/1015029 github.com: https://github.com/0xGenesi/CVE/blob/main/MCPHub_OpenAPI_passthroughHeaders_Credential_Exfiltration.md github.com: https://github.com/samanhappy/mcphub/commit/040f7b9ae004070bdfe5084cde6bc2c609f78e76 github.com: https://github.com/samanhappy/mcphub/releases/tag/v1.1.8 github.com: https://github.com/samanhappy/mcphub/

Credits

🔍 chenhuanlin (VulDB User)