{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-4258",
        "assignerOrgId": "bae035ff-b466-4ff4-94d0-fc9efd9e1730",
        "state": "PUBLISHED",
        "assignerShortName": "snyk",
        "dateReserved": "2026-03-16T10:00:53.239Z",
        "datePublished": "2026-03-17T05:00:04.199Z",
        "dateUpdated": "2026-08-07T15:25:31.786Z"
    },
    "containers": {
        "cna": {
            "metrics": [
                {
                    "cvssV3_1": {
                        "version": "3.1",
                        "attackVector": "NETWORK",
                        "attackComplexity": "LOW",
                        "exploitCodeMaturity": "PROOF_OF_CONCEPT",
                        "privilegesRequired": "NONE",
                        "userInteraction": "NONE",
                        "scope": "UNCHANGED",
                        "confidentialityImpact": "HIGH",
                        "integrityImpact": "NONE",
                        "availabilityImpact": "NONE",
                        "baseScore": 7.5,
                        "baseSeverity": "HIGH",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:P"
                    },
                    "cvssV4_0": {
                        "version": "4.0",
                        "attackVector": "NETWORK",
                        "attackComplexity": "LOW",
                        "attackRequirements": "NONE",
                        "exploitMaturity": "PROOF_OF_CONCEPT",
                        "privilegesRequired": "NONE",
                        "userInteraction": "NONE",
                        "vulnConfidentialityImpact": "HIGH",
                        "vulnIntegrityImpact": "NONE",
                        "vulnAvailabilityImpact": "NONE",
                        "subConfidentialityImpact": "NONE",
                        "subIntegrityImpact": "NONE",
                        "subAvailabilityImpact": "NONE",
                        "baseScore": 8.7,
                        "baseSeverity": "HIGH",
                        "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:P"
                    }
                }
            ],
            "credits": [
                {
                    "value": "Kr0emer",
                    "lang": "en"
                }
            ],
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-347",
                            "description": "Improper Verification of Cryptographic Signature",
                            "lang": "en"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "bae035ff-b466-4ff4-94d0-fc9efd9e1730",
                "shortName": "snyk",
                "dateUpdated": "2026-08-07T15:25:31.786Z"
            },
            "descriptions": [
                {
                    "value": "Versions of the package sjcl before 1.0.9 are vulnerable to Improper Verification of Cryptographic Signature due to missing point-on-curve validation in sjcl.ecc.basicKey.publicKey(). An attacker can recover a victim's ECDH private key by sending crafted off-curve public keys and observing ECDH outputs. The dhJavaEc() function directly returns the raw x-coordinate of the scalar multiplication result (no hashing), providing a plaintext oracle without requiring any decryption feedback.",
                    "lang": "en"
                }
            ],
            "references": [
                {
                    "url": "https://security.snyk.io/vuln/SNYK-JS-SJCL-15369617"
                },
                {
                    "url": "https://security.snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-15751243"
                },
                {
                    "url": "https://gist.github.com/Kr0emer/2560f98edb10b0b34f2438cd63913c47"
                },
                {
                    "url": "https://github.com/bitwiseshiftleft/sjcl/blob/master/core/ecc.js%23L454-L461"
                },
                {
                    "url": "https://github.com/bitwiseshiftleft/sjcl/commit/ee307459972442a17beebc29dc331fffd8aff796"
                }
            ],
            "affected": [
                {
                    "product": "sjcl",
                    "versions": [
                        {
                            "version": "0",
                            "lessThan": "1.0.9",
                            "status": "affected",
                            "versionType": "semver"
                        }
                    ],
                    "vendor": "n/a"
                },
                {
                    "product": "org.webjars.npm:sjcl",
                    "versions": [
                        {
                            "version": "0",
                            "lessThan": "*",
                            "status": "affected",
                            "versionType": "semver"
                        }
                    ],
                    "vendor": "n/a"
                }
            ]
        },
        "adp": [
            {
                "problemTypes": [
                    {
                        "descriptions": [
                            {
                                "type": "CWE",
                                "cweId": "CWE-325",
                                "lang": "en",
                                "description": "CWE-325 Missing Cryptographic Step"
                            }
                        ]
                    }
                ],
                "references": [
                    {
                        "url": "https://gist.github.com/Kr0emer/2560f98edb10b0b34f2438cd63913c47",
                        "tags": [
                            "exploit"
                        ]
                    },
                    {
                        "url": "https://security.snyk.io/vuln/SNYK-JS-SJCL-15369617",
                        "tags": [
                            "exploit"
                        ]
                    }
                ],
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-03-17T13:22:02.709429Z",
                                "id": "CVE-2026-4258",
                                "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": "2026-03-17T13:22:11.049Z"
                }
            }
        ]
    }
}