{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-73299",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-08-11T19:42:11.450Z",
        "datePublished": "2026-08-12T17:31:38.807Z",
        "dateUpdated": "2026-08-12T18:54:20.646Z"
    },
    "containers": {
        "cna": {
            "title": "Prompty: Server-Side Template Injection to Remote Code Execution in the @prompty/core Nunjucks Renderer",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-94",
                            "lang": "en",
                            "description": "CWE-94: Improper Control of Generation of Code ('Code Injection')",
                            "type": "CWE"
                        }
                    ]
                },
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-1336",
                            "lang": "en",
                            "description": "CWE-1336: Improper Neutralization of Special Elements Used in a Template Engine",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "LOW",
                        "attackVector": "NETWORK",
                        "availabilityImpact": "HIGH",
                        "baseScore": 10,
                        "baseSeverity": "CRITICAL",
                        "confidentialityImpact": "HIGH",
                        "integrityImpact": "HIGH",
                        "privilegesRequired": "NONE",
                        "scope": "CHANGED",
                        "userInteraction": "NONE",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H",
                        "version": "3.1"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/microsoft/prompty/security/advisories/GHSA-w28w-gp39-m4p6",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/microsoft/prompty/security/advisories/GHSA-w28w-gp39-m4p6"
                },
                {
                    "name": "https://github.com/microsoft/prompty/pull/404",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/microsoft/prompty/pull/404"
                },
                {
                    "name": "https://github.com/microsoft/prompty/pull/405",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/microsoft/prompty/pull/405"
                },
                {
                    "name": "https://github.com/microsoft/prompty/commit/e4a0ebf49e3a78d5d7796c8480bf9a4f0c54d19e",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/microsoft/prompty/commit/e4a0ebf49e3a78d5d7796c8480bf9a4f0c54d19e"
                },
                {
                    "name": "https://github.com/microsoft/prompty/commit/f5c57c94a0990cca79d095c3daab661b4b1fb89f",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/microsoft/prompty/commit/f5c57c94a0990cca79d095c3daab661b4b1fb89f"
                },
                {
                    "name": "https://github.com/microsoft/prompty/tree/typescript/2.0.0-beta.5",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/microsoft/prompty/tree/typescript/2.0.0-beta.5"
                }
            ],
            "affected": [
                {
                    "vendor": "microsoft",
                    "product": "prompty",
                    "versions": [
                        {
                            "version": "< 0.1.5",
                            "status": "affected"
                        },
                        {
                            "version": ">= 2.0.0-alpha.1, < 2.0.0-beta.5",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-08-12T17:31:38.807Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "Prompty is a markdown file format (.prompty) for LLM prompts. Prior to 0.1.5 and 2.0.0-beta.5, the TypeScript Nunjucks renderer evaluated untrusted .prompty template bodies with unrestricted JavaScript member access. An attacker-controlled template could traverse constructor and prototype properties to execute JavaScript in the host Node.js process. This issue is fixed in versions 0.1.5 and 2.0.0-beta.5."
                }
            ],
            "source": {
                "advisory": "GHSA-w28w-gp39-m4p6",
                "discovery": "UNKNOWN"
            }
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-08-12T18:53:50.277151Z",
                                "id": "CVE-2026-73299",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "yes"
                                    },
                                    {
                                        "Technical Impact": "total"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2026-08-12T18:54:20.646Z"
                }
            }
        ]
    }
}