CVE-2026-120323

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    CVE-2026-120323

    Published: 2 Nov 2026Last Modified: 4 Nov 2026

    Summary: samanhappy MCPHub passthroughHeaders.ts information disclosure

    Details: 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.

    References: https://github.com/0xGenesi/CVE/blob/main/MCPHub_OpenAPI_passthroughHeaders_Credential_Exfiltration.md, https://github.com/samanhappy/mcphub/, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/120xxx/CVE-2026-120323.json, https://nvd.nist.gov/vuln/detail/CVE-2026-120323, https://vuldb.com/cve/CVE-2026-120323, https://vuldb.com/submit/1015029, https://vuldb.com/vuln/429655, https://vuldb.com/vuln/429655/cti, https://github.com/samanhappy/mcphub/commit/040f7b9ae004070bdfe5084cde6bc2c609f78e76, https://github.com/samanhappy/mcphub/releases/tag/v1.1.8

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- da23f691f6203e907b5ed27bfb54d5ac0bdf80e5
    Fixed -040f7b9ae004070bdfe5084cde6bc2c609f78e76

    Affected versions

    1.0.0
    1.0.1
    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
    1.0.2
    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
    1.0.3
    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
    1.0.4
    1.0.40
    1.0.41
    1.0.42
    1.0.43
    1.0.44
    1.0.45
    1.0.5
    1.0.6
    1.0.7
    1.0.8
    1.0.9

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2026-120323 | CVE-DB