{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-54638",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-06-15T20:07:02.186Z",
        "datePublished": "2026-07-28T22:14:53.550Z",
        "dateUpdated": "2026-07-29T14:20:26.682Z"
    },
    "containers": {
        "cna": {
            "title": "td has pre-auth denial of service via unbounded memory allocation in proto.UnencryptedMessage.Decode",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-770",
                            "lang": "en",
                            "description": "CWE-770: Allocation of Resources Without Limits or Throttling",
                            "type": "CWE"
                        }
                    ]
                },
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-789",
                            "lang": "en",
                            "description": "CWE-789: Memory Allocation with Excessive Size Value",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "LOW",
                        "attackVector": "NETWORK",
                        "availabilityImpact": "HIGH",
                        "baseScore": 7.5,
                        "baseSeverity": "HIGH",
                        "confidentialityImpact": "NONE",
                        "integrityImpact": "NONE",
                        "privilegesRequired": "NONE",
                        "scope": "UNCHANGED",
                        "userInteraction": "NONE",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                        "version": "3.1"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/gotd/td/security/advisories/GHSA-whmm-qj9r-wvr2",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/gotd/td/security/advisories/GHSA-whmm-qj9r-wvr2"
                },
                {
                    "name": "https://github.com/gotd/td/issues/1711",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/gotd/td/issues/1711"
                },
                {
                    "name": "https://github.com/gotd/td/commit/9d5d1f31ea5022d9798d84ccce15de2e91ba6baa",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/gotd/td/commit/9d5d1f31ea5022d9798d84ccce15de2e91ba6baa"
                },
                {
                    "name": "https://github.com/gotd/td/releases/tag/v0.145.1",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/gotd/td/releases/tag/v0.145.1"
                }
            ],
            "affected": [
                {
                    "vendor": "gotd",
                    "product": "td",
                    "versions": [
                        {
                            "version": "< 0.145.1",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-07-28T22:14:53.550Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "gotd/td is a T Telegram MTProto API client in Go. Prior to 0.145.1, proto.UnencryptedMessage.Decode in proto/unencrypted_message.go read attacker controlled dataLen from an unauthenticated MTProto unencrypted packet and allocated make([]byte, dataLen) before checking the remaining buffer, allowing remote unauthenticated denial of service through excessive memory allocation and CPU or garbage collection pressure. This issue is fixed in version 0.145.1."
                }
            ],
            "source": {
                "advisory": "GHSA-whmm-qj9r-wvr2",
                "discovery": "UNKNOWN"
            }
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-07-29T14:20:16.425469Z",
                                "id": "CVE-2026-54638",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "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": "2026-07-29T14:20:26.682Z"
                }
            }
        ]
    }
}