{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-35041",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-03-31T21:06:06.428Z",
        "datePublished": "2026-04-09T14:55:22.807Z",
        "dateUpdated": "2026-04-09T16:15:25.352Z"
    },
    "containers": {
        "cna": {
            "title": "ReDoS in fast-jwt when using RegExp in allowed* leading to CPU exhaustion during token verification",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-1333",
                            "lang": "en",
                            "description": "CWE-1333: Inefficient Regular Expression Complexity",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "HIGH",
                        "attackVector": "NETWORK",
                        "availabilityImpact": "HIGH",
                        "baseScore": 4.2,
                        "baseSeverity": "MEDIUM",
                        "confidentialityImpact": "NONE",
                        "integrityImpact": "NONE",
                        "privilegesRequired": "HIGH",
                        "scope": "UNCHANGED",
                        "userInteraction": "REQUIRED",
                        "vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:N/A:H",
                        "version": "3.1"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/nearform/fast-jwt/security/advisories/GHSA-cjw9-ghj4-fwxf",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/nearform/fast-jwt/security/advisories/GHSA-cjw9-ghj4-fwxf"
                },
                {
                    "name": "https://github.com/nearform/fast-jwt/pull/595",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/nearform/fast-jwt/pull/595"
                },
                {
                    "name": "https://github.com/nearform/fast-jwt/commit/b0be0ca161593836a153d5180ca5358ad9b5de94",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/nearform/fast-jwt/commit/b0be0ca161593836a153d5180ca5358ad9b5de94"
                },
                {
                    "name": "https://github.com/nearform/fast-jwt/releases/tag/v6.2.1",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/nearform/fast-jwt/releases/tag/v6.2.1"
                }
            ],
            "affected": [
                {
                    "vendor": "nearform",
                    "product": "fast-jwt",
                    "versions": [
                        {
                            "version": ">= 5.0.0, < 6.2.1",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-04-09T14:55:22.807Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "fast-jwt provides fast JSON Web Token (JWT) implementation. From 5.0.0 to 6.2.0, a denial-of-service condition exists in fast-jwt when the allowedAud verification option is configured using a regular expression. Because the aud claim is attacker-controlled and the library evaluates it against the supplied RegExp, a crafted JWT can trigger catastrophic backtracking in the JavaScript regex engine, resulting in significant CPU consumption during verification. This vulnerability is fixed in 6.2.1."
                }
            ],
            "source": {
                "advisory": "GHSA-cjw9-ghj4-fwxf",
                "discovery": "UNKNOWN"
            }
        },
        "adp": [
            {
                "references": [
                    {
                        "url": "https://github.com/nearform/fast-jwt/security/advisories/GHSA-cjw9-ghj4-fwxf",
                        "tags": [
                            "exploit"
                        ]
                    }
                ],
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-04-09T16:14:14.434470Z",
                                "id": "CVE-2026-35041",
                                "options": [
                                    {
                                        "Exploitation": "poc"
                                    },
                                    {
                                        "Automatable": "no"
                                    },
                                    {
                                        "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": "2026-04-09T16:15:25.352Z"
                }
            }
        ]
    }
}