{
    "data_version": "4.0",
    "data_type": "CVE",
    "data_format": "MITRE",
    "CVE_data_meta": {
        "ID": "CVE-2024-28121",
        "ASSIGNER": "security-advisories@github.com",
        "STATE": "PUBLIC"
    },
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "stimulus_reflex is a system to extend the capabilities of both Rails and Stimulus by intercepting user interactions and passing them to Rails over real-time websockets. In affected versions more methods than expected can be called on reflex instances. Being able to call some of them has security implications. To invoke a reflex a websocket message of the following shape is sent: `\\\"target\\\":\\\"[class_name]#[method_name]\\\",\\\"args\\\":[]`. The server will proceed to instantiate `reflex` using the provided `class_name` as long as it extends `StimulusReflex::Reflex`. It then attempts to call `method_name` on the instance with the provided arguments. This is problematic as `reflex.method method_name` can be more methods that those explicitly specified by the developer in their reflex class. A good example is the instance_variable_set method. This vulnerability has been patched in versions 3.4.2 and 3.5.0.rc4. Users unable to upgrade should: see the backing GHSA advisory for mitigation advice."
            }
        ]
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "CWE-470: Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection')",
                        "cweId": "CWE-470"
                    }
                ]
            }
        ]
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "vendor_name": "stimulusreflex",
                    "product": {
                        "product_data": [
                            {
                                "product_name": "stimulus_reflex",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_affected": "=",
                                            "version_value": ">= 3.5.0.rc1, < 3.5.0.rc4"
                                        },
                                        {
                                            "version_affected": "=",
                                            "version_value": "< 3.4.2"
                                        }
                                    ]
                                }
                            }
                        ]
                    }
                }
            ]
        }
    },
    "references": {
        "reference_data": [
            {
                "url": "https://github.com/stimulusreflex/stimulus_reflex/security/advisories/GHSA-f78j-4w3g-4q65",
                "refsource": "MISC",
                "name": "https://github.com/stimulusreflex/stimulus_reflex/security/advisories/GHSA-f78j-4w3g-4q65"
            },
            {
                "url": "https://github.com/stimulusreflex/stimulus_reflex/commit/538582d240439aab76066c72335ea92096cd0c7f",
                "refsource": "MISC",
                "name": "https://github.com/stimulusreflex/stimulus_reflex/commit/538582d240439aab76066c72335ea92096cd0c7f"
            },
            {
                "url": "https://github.com/stimulusreflex/stimulus_reflex/blob/0211cad7d60fe96838587f159d657e44cee51b9b/app/channels/stimulus_reflex/channel.rb#L83",
                "refsource": "MISC",
                "name": "https://github.com/stimulusreflex/stimulus_reflex/blob/0211cad7d60fe96838587f159d657e44cee51b9b/app/channels/stimulus_reflex/channel.rb#L83"
            },
            {
                "url": "https://github.com/stimulusreflex/stimulus_reflex/releases/tag/v3.4.2",
                "refsource": "MISC",
                "name": "https://github.com/stimulusreflex/stimulus_reflex/releases/tag/v3.4.2"
            },
            {
                "url": "https://github.com/stimulusreflex/stimulus_reflex/releases/tag/v3.5.0.rc4",
                "refsource": "MISC",
                "name": "https://github.com/stimulusreflex/stimulus_reflex/releases/tag/v3.5.0.rc4"
            },
            {
                "url": "http://seclists.org/fulldisclosure/2024/Mar/16",
                "refsource": "MISC",
                "name": "http://seclists.org/fulldisclosure/2024/Mar/16"
            }
        ]
    },
    "source": {
        "advisory": "GHSA-f78j-4w3g-4q65",
        "discovery": "UNKNOWN"
    },
    "impact": {
        "cvss": [
            {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "HIGH",
                "baseScore": 8.8,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                "version": "3.1"
            }
        ]
    }
}