{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-12209",
        "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
        "state": "PUBLISHED",
        "assignerShortName": "VulDB",
        "dateReserved": "2026-06-14T12:27:55.933Z",
        "datePublished": "2026-06-15T02:15:07.361Z",
        "dateUpdated": "2026-06-15T12:52:28.046Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
                "shortName": "VulDB",
                "dateUpdated": "2026-06-15T02:15:07.361Z"
            },
            "title": "RubyLouvre avalon Template Filter index.js prototype pollution",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "type": "CWE",
                            "cweId": "CWE-1321",
                            "lang": "en",
                            "description": "Improperly Controlled Modification of Object Prototype Attributes"
                        }
                    ]
                },
                {
                    "descriptions": [
                        {
                            "type": "CWE",
                            "cweId": "CWE-94",
                            "lang": "en",
                            "description": "Code Injection"
                        }
                    ]
                }
            ],
            "affected": [
                {
                    "vendor": "RubyLouvre",
                    "product": "avalon",
                    "versions": [
                        {
                            "version": "2.2.0",
                            "status": "affected"
                        },
                        {
                            "version": "2.2.1",
                            "status": "affected"
                        },
                        {
                            "version": "2.2.2",
                            "status": "affected"
                        },
                        {
                            "version": "2.2.3",
                            "status": "affected"
                        },
                        {
                            "version": "2.2.4",
                            "status": "affected"
                        },
                        {
                            "version": "2.2.5",
                            "status": "affected"
                        },
                        {
                            "version": "2.2.6",
                            "status": "affected"
                        },
                        {
                            "version": "2.2.7",
                            "status": "affected"
                        },
                        {
                            "version": "2.2.8",
                            "status": "affected"
                        },
                        {
                            "version": "2.2.9",
                            "status": "affected"
                        },
                        {
                            "version": "2.2.10",
                            "status": "affected"
                        }
                    ],
                    "cpes": [
                        "cpe:2.3:a:rubylouvre:avalon:*:*:*:*:*:*:*:*"
                    ],
                    "modules": [
                        "Template Filter Handler"
                    ]
                }
            ],
            "descriptions": [
                {
                    "lang": "en",
                    "value": "A security vulnerability has been detected in RubyLouvre avalon up to 2.2.10. The impacted element is an unknown function of the file src/filters/index.js of the component Template Filter Handler. Such manipulation leads to improperly controlled modification of object prototype attributes. It is possible to launch the attack remotely. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way."
                }
            ],
            "metrics": [
                {
                    "cvssV4_0": {
                        "version": "4.0",
                        "baseScore": 6.9,
                        "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P",
                        "baseSeverity": "MEDIUM"
                    }
                },
                {
                    "cvssV3_1": {
                        "version": "3.1",
                        "baseScore": 5.3,
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:P/RL:X/RC:R",
                        "baseSeverity": "MEDIUM"
                    }
                },
                {
                    "cvssV3_0": {
                        "version": "3.0",
                        "baseScore": 5.3,
                        "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:P/RL:X/RC:R",
                        "baseSeverity": "MEDIUM"
                    }
                },
                {
                    "cvssV2_0": {
                        "version": "2.0",
                        "baseScore": 5,
                        "vectorString": "AV:N/AC:L/Au:N/C:N/I:P/A:N/E:POC/RL:ND/RC:UR"
                    }
                }
            ],
            "timeline": [
                {
                    "time": "2026-06-14T00:00:00.000Z",
                    "lang": "en",
                    "value": "Advisory disclosed"
                },
                {
                    "time": "2026-06-14T02:00:00.000Z",
                    "lang": "en",
                    "value": "VulDB entry created"
                },
                {
                    "time": "2026-06-14T14:32:59.000Z",
                    "lang": "en",
                    "value": "VulDB entry last update"
                }
            ],
            "credits": [
                {
                    "lang": "en",
                    "value": "Frederick (VulDB User)",
                    "type": "reporter"
                },
                {
                    "lang": "en",
                    "value": "VulDB CNA Team",
                    "type": "coordinator"
                }
            ],
            "references": [
                {
                    "url": "https://vuldb.com/vuln/370851",
                    "name": "VDB-370851 | RubyLouvre avalon Template Filter index.js prototype pollution",
                    "tags": [
                        "vdb-entry"
                    ]
                },
                {
                    "url": "https://vuldb.com/vuln/370851/cti",
                    "name": "VDB-370851 | CTI Indicators (IOB, IOC, TTP, IOA)",
                    "tags": [
                        "signature",
                        "permissions-required"
                    ]
                },
                {
                    "url": "https://vuldb.com/cve/CVE-2026-12209",
                    "name": "CVE-2026-12209 | CVE Analysis and Report",
                    "tags": [
                        "third-party-advisory"
                    ]
                },
                {
                    "url": "https://vuldb.com/submit/832447",
                    "name": "Submit #832447 | RubyLouvre avalon 0.9.9 - 2.2.10 Code Injection / Prototype Pollution",
                    "tags": [
                        "third-party-advisory"
                    ]
                },
                {
                    "url": "https://github.com/OriginSecurityX/avalon-filter-rce",
                    "tags": [
                        "exploit"
                    ]
                }
            ]
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-06-15T12:52:08.917862Z",
                                "id": "CVE-2026-12209",
                                "options": [
                                    {
                                        "Exploitation": "poc"
                                    },
                                    {
                                        "Automatable": "yes"
                                    },
                                    {
                                        "Technical Impact": "partial"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2026-06-15T12:52:28.046Z"
                }
            }
        ]
    }
}