Medium 4.3Published Nov 1, 2026

CVE-2026-120323samanhappy MCPHub passthroughHeaders.ts information disclosure

Updated under an hour ago (Nov 2, 2026, 1:40 AM ET)

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No exploitation reported and no EPSS estimate yet.

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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.

CVSS: 4.3 MEDIUM (v3.1, CNA)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
Weakness (CWE): CWE-200, CWE-284
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulDB
NVD analysis: Deferred
Record last updated: Nov 1, 2026
First seen by InfoSec Signals: Nov 1, 2026

Affected products

Affected products

samanhappy MCPHub 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; and 47 more ranges	CNA record

References

References

https://vuldb.com/vuln/429655	vdb-entry, technical-description
https://vuldb.com/vuln/429655/cti	signature, permissions-required
https://vuldb.com/cve/CVE-2026-120323	third-party-advisory
https://vuldb.com/submit/1015029	third-party-advisory
https://github.com/0xGenesi/CVE/blob/main/MCPHub_OpenAPI_passthroughHeaders_Credential_Exfiltration.md	related
https://github.com/samanhappy/mcphub/commit/040f7b9ae004070bdfe5084cde6bc2c609f78e76	patch
https://github.com/samanhappy/mcphub/releases/tag/v1.1.8	patch
https://github.com/samanhappy/mcphub/	product

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.