{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-35039",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-03-31T21:06:06.428Z",
        "datePublished": "2026-04-06T16:59:43.124Z",
        "dateUpdated": "2026-05-13T15:12:43.989Z"
    },
    "containers": {
        "cna": {
            "title": "fast-jwt Affected by Cache Confusion via cacheKeyBuilder Collisions Can Return Claims From a Different Token (Identity/Authorization Mixup)",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-345",
                            "lang": "en",
                            "description": "CWE-345: Insufficient Verification of Data Authenticity",
                            "type": "CWE"
                        }
                    ]
                },
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-706",
                            "lang": "en",
                            "description": "CWE-706: Use of Incorrectly-Resolved Name or Reference",
                            "type": "CWE"
                        }
                    ]
                },
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-1289",
                            "lang": "en",
                            "description": "CWE-1289: Improper Validation of Unsafe Equivalence in Input",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "LOW",
                        "attackVector": "NETWORK",
                        "availabilityImpact": "NONE",
                        "baseScore": 9.1,
                        "baseSeverity": "CRITICAL",
                        "confidentialityImpact": "HIGH",
                        "integrityImpact": "HIGH",
                        "privilegesRequired": "NONE",
                        "scope": "UNCHANGED",
                        "userInteraction": "NONE",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
                        "version": "3.1"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/nearform/fast-jwt/security/advisories/GHSA-rp9m-7r4c-75qg",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/nearform/fast-jwt/security/advisories/GHSA-rp9m-7r4c-75qg"
                },
                {
                    "name": "https://github.com/nearform/fast-jwt/commit/de121056c6415b58770c60640881eaec67ac4ceb",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/nearform/fast-jwt/commit/de121056c6415b58770c60640881eaec67ac4ceb"
                }
            ],
            "affected": [
                {
                    "vendor": "nearform",
                    "product": "fast-jwt",
                    "versions": [
                        {
                            "version": ">= 0.0.1, < 6.2.0",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-04-08T11:54:39.776Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "fast-jwt provides fast JSON Web Token (JWT) implementation. From 0.0.1 to before 6.2.0, setting up a custom cacheKeyBuilder method which does not properly create unique keys for different tokens can lead to cache collisions. This could cause tokens to be mis-identified during the verification process leading to valid tokens returning claims from different valid tokens and users being mis-identified as other users based on the wrong token. Version 6.2.0 contains a patch."
                }
            ],
            "source": {
                "advisory": "GHSA-rp9m-7r4c-75qg",
                "discovery": "UNKNOWN"
            }
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-04-07T14:25:32.378641Z",
                                "id": "CVE-2026-35039",
                                "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": "2026-05-13T15:12:43.989Z"
                }
            }
        ]
    }
}