{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-55378",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-06-16T18:57:40.181Z",
        "datePublished": "2026-08-28T18:15:41.125Z",
        "dateUpdated": "2026-09-01T01:51:26.785Z"
    },
    "containers": {
        "cna": {
            "title": "JS Recon: Command injection in PR Branch Checker workflow via untrusted pull request context values",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-78",
                            "lang": "en",
                            "description": "CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV4_0": {
                        "attackVector": "NETWORK",
                        "attackComplexity": "LOW",
                        "attackRequirements": "NONE",
                        "privilegesRequired": "NONE",
                        "userInteraction": "NONE",
                        "vulnConfidentialityImpact": "HIGH",
                        "vulnIntegrityImpact": "HIGH",
                        "vulnAvailabilityImpact": "NONE",
                        "subConfidentialityImpact": "NONE",
                        "subIntegrityImpact": "NONE",
                        "subAvailabilityImpact": "NONE",
                        "baseScore": 9.3,
                        "baseSeverity": "CRITICAL",
                        "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N",
                        "version": "4.0"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/js-recon/js-recon/security/advisories/GHSA-w9cj-mg3x-qjm4",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/js-recon/js-recon/security/advisories/GHSA-w9cj-mg3x-qjm4"
                },
                {
                    "name": "https://github.com/js-recon/js-recon/pull/121",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/js-recon/js-recon/pull/121"
                },
                {
                    "name": "https://github.com/js-recon/js-recon/commit/447876c4bfa9ec5bc98cbc65d7a3e5f889412491",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/js-recon/js-recon/commit/447876c4bfa9ec5bc98cbc65d7a3e5f889412491"
                },
                {
                    "name": "https://github.com/js-recon/js-recon/releases/tag/v1.3.1-beta.2",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/js-recon/js-recon/releases/tag/v1.3.1-beta.2"
                }
            ],
            "affected": [
                {
                    "vendor": "shriyanss",
                    "product": "js-recon",
                    "versions": [
                        {
                            "version": ">= 1.2.1-beta.1, < 1.3.1-beta.2",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-08-28T18:15:41.125Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "JS Recon is a JavaScript enumeration and SAST tool. From 1.2.1-beta.1 until 1.3.1-beta.2, the PR Branch Checker workflow in .github/workflows/pr_checker.yml places github.head_ref and github.event.pull_request.head.repo.full_name into BRANCH_NAME and SOURCE_REPO and interpolates those untrusted values into a shell gh pr comment command. A remote user who opens a pull request can use shell metacharacters in a branch or fork name to execute commands in the GitHub Actions runner with the workflow's GITHUB_TOKEN, which has pull-requests write permission. This issue is fixed in version 1.3.1-beta.2."
                }
            ],
            "source": {
                "advisory": "GHSA-w9cj-mg3x-qjm4",
                "discovery": "UNKNOWN"
            }
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-09-01T01:51:16.279187Z",
                                "id": "CVE-2026-55378",
                                "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": "2026-09-01T01:51:26.785Z"
                }
            }
        ]
    }
}