{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-86063",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-09-04T19:34:03.099Z",
        "datePublished": "2026-10-13T19:04:11.695Z",
        "dateUpdated": "2026-10-13T20:21:00.156Z"
    },
    "containers": {
        "cna": {
            "title": "Claude Code: Plugin Hash Pin Bypass Allows Bypass of Hash Pinning",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-494",
                            "lang": "en",
                            "description": "CWE-494: Download of Code Without Integrity Check",
                            "type": "CWE"
                        }
                    ]
                },
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-829",
                            "lang": "en",
                            "description": "CWE-829: Inclusion of Functionality from Untrusted Control Sphere",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV4_0": {
                        "attackVector": "NETWORK",
                        "attackComplexity": "LOW",
                        "attackRequirements": "PRESENT",
                        "privilegesRequired": "NONE",
                        "userInteraction": "ACTIVE",
                        "vulnConfidentialityImpact": "HIGH",
                        "vulnIntegrityImpact": "HIGH",
                        "vulnAvailabilityImpact": "HIGH",
                        "subConfidentialityImpact": "NONE",
                        "subIntegrityImpact": "NONE",
                        "subAvailabilityImpact": "NONE",
                        "baseScore": 7.5,
                        "baseSeverity": "HIGH",
                        "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
                        "version": "4.0"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/anthropics/claude-code/security/advisories/GHSA-pq7j-f95f-qfcv",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/anthropics/claude-code/security/advisories/GHSA-pq7j-f95f-qfcv"
                },
                {
                    "name": "https://github.com/anthropics/claude-code/releases/tag/v2.1.179",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/anthropics/claude-code/releases/tag/v2.1.179"
                }
            ],
            "affected": [
                {
                    "vendor": "anthropics",
                    "product": "claude-code",
                    "versions": [
                        {
                            "version": "< 2.1.179",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-10-13T19:04:11.695Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "Claude Code is an agentic coding tool. Prior to 2.1.179, the Claude Code and Claude Desktop plugin installation flow runs git checkout for a marketplace-pinned commit without verifying that the resulting HEAD equals the pinned 40-character SHA. An attacker who controls a plugin repository on a Git host that permits SHA-shaped branch names can create a branch named after the reviewed commit, causing checkout to select the branch tip and install attacker-controlled plugin code. Exploitation requires a user to install the malicious plugin and pin it to the ostensibly safe hash. This issue is fixed in version 2.1.179."
                }
            ],
            "source": {
                "advisory": "GHSA-pq7j-f95f-qfcv",
                "discovery": "UNKNOWN"
            }
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-10-13T20:14:06.546364Z",
                                "id": "CVE-2026-86063",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "no"
                                    },
                                    {
                                        "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": "2026-10-13T20:21:00.156Z"
                }
            }
        ]
    }
}