{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-54736",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-06-15T23:07:33.233Z",
        "datePublished": "2026-07-10T21:02:53.873Z",
        "dateUpdated": "2026-07-13T18:01:40.822Z"
    },
    "containers": {
        "cna": {
            "title": "Phalcon: Non-constant-time HMAC verification in `Encryption\\Crypt::decrypt` (timing side-channel)",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-208",
                            "lang": "en",
                            "description": "CWE-208: Observable Timing Discrepancy",
                            "type": "CWE"
                        }
                    ]
                },
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-347",
                            "lang": "en",
                            "description": "CWE-347: Improper Verification of Cryptographic Signature",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV4_0": {
                        "attackVector": "NETWORK",
                        "attackComplexity": "HIGH",
                        "attackRequirements": "NONE",
                        "privilegesRequired": "NONE",
                        "userInteraction": "NONE",
                        "vulnConfidentialityImpact": "NONE",
                        "vulnIntegrityImpact": "HIGH",
                        "vulnAvailabilityImpact": "NONE",
                        "subConfidentialityImpact": "NONE",
                        "subIntegrityImpact": "NONE",
                        "subAvailabilityImpact": "NONE",
                        "baseScore": 8.2,
                        "baseSeverity": "HIGH",
                        "vectorString": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N",
                        "version": "4.0"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/phalcon/cphalcon/security/advisories/GHSA-8jqh-95g6-7jpj",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/phalcon/cphalcon/security/advisories/GHSA-8jqh-95g6-7jpj"
                },
                {
                    "name": "https://github.com/phalcon/cphalcon/issues/17090",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/phalcon/cphalcon/issues/17090"
                },
                {
                    "name": "https://github.com/phalcon/cphalcon/pull/17091",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/phalcon/cphalcon/pull/17091"
                },
                {
                    "name": "https://github.com/phalcon/cphalcon/commit/ad53ab1b2e7ec59b3af92b0b37b8aaa099011137",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/phalcon/cphalcon/commit/ad53ab1b2e7ec59b3af92b0b37b8aaa099011137"
                },
                {
                    "name": "https://github.com/phalcon/cphalcon/releases/tag/v5.14.1",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/phalcon/cphalcon/releases/tag/v5.14.1"
                }
            ],
            "affected": [
                {
                    "vendor": "phalcon",
                    "product": "cphalcon",
                    "versions": [
                        {
                            "version": "< 5.14.1",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-07-10T21:02:53.873Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "Phalcon is a high-performance, full-stack PHP framework. Prior to 5.14.1, Phalcon\\Encryption\\Crypt::decrypt compares the attacker-supplied HMAC tag against the freshly computed HMAC using PHP/Zephir identity comparison, which lowers to a byte-wise comparison that returns early on the first differing byte. This observable timing discrepancy can allow an attacker to recover a valid tag byte-by-byte and attach it to a chosen IV and ciphertext so that decrypt() accepts tampered encrypted content as authentic. This issue is fixed in version 5.14.1."
                }
            ],
            "source": {
                "advisory": "GHSA-8jqh-95g6-7jpj",
                "discovery": "UNKNOWN"
            }
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-07-13T18:01:29.598956Z",
                                "id": "CVE-2026-54736",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "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": "2026-07-13T18:01:40.822Z"
                }
            }
        ]
    }
}