{
    "document": {
        "category": "csaf_base",
        "csaf_version": "2.0",
        "distribution": {
            "tlp": {
                "label": "WHITE"
            }
        },
        "lang": "en",
        "notes": [
            {
                "category": "legal_disclaimer",
                "text": "The Netherlands Cyber Security Center (henceforth: NCSC-NL) maintains this portal to enhance access to its information and vulnerabilities. The use of this information is subject to the following terms and conditions:\n\nThe vulnerabilities disclosed in this portal are gathered by NCSC-NL from a variety of open sources, which the user can retrieve from other platforms. NCSC-NL makes every reasonable effort to ensure that the content of this portal is kept up to date, and that it is accurate and complete. Nevertheless, NCSC-NL cannot entirely rule out the possibility of errors, and therefore cannot give any warranty in respect of its completeness, accuracy or real-time keeping up-to-date. NCSC-NL does not control nor guarantee the accuracy, relevance, timeliness or completeness of information obtained from these external sources. The vulnerabilities disclosed in this portal are intended solely for the convenience of professional parties to take appropriate measures to manage the risks posed to the cybersecurity. No rights can be derived from the information provided therein.\n\nNCSC-NL and the Kingdom of the Netherlands assume no legal liability or responsibility for any damage resulting from either the use or inability of use of the vulnerabilities disclosed in this portal. This includes damage resulting from the inaccuracy of incompleteness of the information contained in it.\nThe information on this page is subject to Dutch law. All disputes related to or arising from the use of this portal regarding the disclosure of vulnerabilities will be submitted to the competent court in The Hague. This choice of means also applies to the court in summary proceedings."
            }
        ],
        "publisher": {
            "category": "coordinator",
            "contact_details": "cert@ncsc.nl",
            "name": "National Cyber Security Centre",
            "namespace": "https://www.ncsc.nl/"
        },
        "title": "CVE-2026-1556",
        "tracking": {
            "current_release_date": "2026-04-02T21:28:27.615870Z",
            "generator": {
                "date": "2026-02-17T15:00:00Z",
                "engine": {
                    "name": "V.E.L.M.A",
                    "version": "1.7"
                }
            },
            "id": "CVE-2026-1556",
            "initial_release_date": "2026-03-26T21:39:07.772508Z",
            "revision_history": [
                {
                    "date": "2026-03-26T21:39:07.772508Z",
                    "number": "1",
                    "summary": "CVE created.| Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products created (1).| References created (2).| CWES updated (1)."
                },
                {
                    "date": "2026-03-26T21:39:10.417615Z",
                    "number": "2",
                    "summary": "NCSC Score created."
                },
                {
                    "date": "2026-03-26T22:25:18.151660Z",
                    "number": "3",
                    "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (2).| CWES updated (1)."
                },
                {
                    "date": "2026-03-26T22:25:25.128375Z",
                    "number": "4",
                    "summary": "NCSC Score updated."
                },
                {
                    "date": "2026-03-27T00:27:36.752020Z",
                    "number": "5",
                    "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (4).| CWES updated (1).| Vendor_assessment created."
                },
                {
                    "date": "2026-03-27T00:27:41.824110Z",
                    "number": "6",
                    "summary": "NCSC Score updated."
                },
                {
                    "date": "2026-03-27T21:27:53.584541Z",
                    "number": "7",
                    "summary": "Unknown change."
                },
                {
                    "date": "2026-03-27T21:28:34.039343Z",
                    "number": "8",
                    "summary": "Source connected.| CVE status created. (valid)| EPSS created."
                },
                {
                    "date": "2026-03-27T21:28:39.723254Z",
                    "number": "9",
                    "summary": "NCSC Score updated."
                },
                {
                    "date": "2026-03-28T11:27:14.635763Z",
                    "number": "10",
                    "summary": "NCSC Score updated."
                },
                {
                    "date": "2026-04-02T21:26:57.443087Z",
                    "number": "11",
                    "summary": "CVSS created.| Products created (1).| Product Identifiers created (1).| Exploits created (1)."
                },
                {
                    "date": "2026-04-02T21:26:59.860600Z",
                    "number": "12",
                    "summary": "NCSC Score updated."
                }
            ],
            "status": "interim",
            "version": "12"
        }
    },
    "product_tree": {
        "branches": [
            {
                "branches": [
                    {
                        "branches": [
                            {
                                "category": "product_version_range",
                                "name": "vers:unknown/7.x-1.0|<7.x-1.3",
                                "product": {
                                    "name": "vers:unknown/7.x-1.0|<7.x-1.3",
                                    "product_id": "CSAFPID-5919309"
                                }
                            }
                        ],
                        "category": "product_name",
                        "name": "Drupal File (Field) Paths"
                    }
                ],
                "category": "vendor",
                "name": "Drupal"
            },
            {
                "branches": [
                    {
                        "branches": [
                            {
                                "category": "product_version_range",
                                "name": "vers:unknown/<7.x-1.3",
                                "product": {
                                    "name": "vers:unknown/<7.x-1.3",
                                    "product_id": "CSAFPID-5985718",
                                    "product_identification_helper": {
                                        "cpe": "cpe:2.3:a:deciphered:filefield_paths:*:*:*:*:*:drupal:*:*"
                                    }
                                }
                            }
                        ],
                        "category": "product_name",
                        "name": "filefield_paths"
                    }
                ],
                "category": "vendor",
                "name": "deciphered"
            }
        ]
    },
    "vulnerabilities": [
        {
            "cve": "CVE-2026-1556",
            "cwe": {
                "id": "CWE-73",
                "name": "External Control of File Name or Path"
            },
            "notes": [
                {
                    "category": "description",
                    "text": "Information disclosure in the file URI processing of File (Field) Paths in Drupal File (Field) Paths 7.x prior to 7.1.3 on Drupal 7.x allows authenticated users to disclose other users’ private files via filename‑collision uploads. This can cause hook_node_insert() consumers (for example, email attachment modules) to receive the wrong file URI, bypassing normal access controls on private files.",
                    "title": "cveprojectv5 - https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/1xxx/CVE-2026-1556.json"
                },
                {
                    "category": "description",
                    "text": "Information disclosure in the file URI processing of File (Field) Paths in Drupal File (Field) Paths 7.x prior to 7.1.3 on Drupal 7.x allows authenticated users to disclose other users’ private files via filename‑collision uploads. This can cause hook_node_insert() consumers (for example, email attachment modules) to receive the wrong file URI, bypassing normal access controls on private files.",
                    "title": "nvd - https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-1556"
                },
                {
                    "category": "description",
                    "text": "A flaw was found in Drupal File (Field) Paths. This information disclosure vulnerability allows authenticated users to disclose other users’ private files. This can be exploited by performing filename-collision uploads, which causes the system to receive incorrect file Uniform Resource Identifiers (URIs), thereby bypassing normal access controls on private files.\nThis information disclosure vulnerability in Drupal File (Field) Paths allows authenticated users to access private files belonging to other users. The flaw arises from filename-collision uploads, which can cause the system to process incorrect file URIs and bypass normal access controls on private files within Drupal 7.x installations utilizing the affected module.",
                    "title": "redhat - https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-1556.json"
                },
                {
                    "category": "other",
                    "text": "0.00042",
                    "title": "EPSS"
                },
                {
                    "category": "other",
                    "text": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N",
                    "title": "CVSSV4"
                },
                {
                    "category": "other",
                    "text": "6.9",
                    "title": "CVSSV4 base score"
                },
                {
                    "category": "other",
                    "text": "4.2",
                    "title": "NCSC Score"
                },
                {
                    "category": "other",
                    "text": "There is cwe data available from source Nvd, There is exploit data available from source Nvd",
                    "title": "NCSC Score top decreasing factors"
                },
                {
                    "category": "details",
                    "text": "Severity: 3\n",
                    "title": "Vendor assessment"
                }
            ],
            "product_status": {
                "known_affected": [
                    "CSAFPID-5919309",
                    "CSAFPID-5985718"
                ]
            },
            "references": [
                {
                    "category": "external",
                    "summary": "Source - cveprojectv5",
                    "url": "https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/1xxx/CVE-2026-1556.json"
                },
                {
                    "category": "external",
                    "summary": "Source - nvd",
                    "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-1556"
                },
                {
                    "category": "external",
                    "summary": "Source - redhat",
                    "url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-1556.json"
                },
                {
                    "category": "external",
                    "summary": "Source - first",
                    "url": "https://api.first.org/data/v1/epss?limit=10000&offset=0"
                },
                {
                    "category": "external",
                    "summary": "Reference - cveprojectv5; nvd; redhat",
                    "url": "https://www.herodevs.com/vulnerability-directory/cve-2026-1556"
                },
                {
                    "category": "external",
                    "summary": "Reference - cveprojectv5; nvd; redhat",
                    "url": "https://d7es.tag1.com/security-advisories/file-field-paths-moderately-critical-file-path-manipulation"
                },
                {
                    "category": "external",
                    "summary": "Reference - redhat",
                    "url": "https://www.cve.org/CVERecord?id=CVE-2026-1556"
                },
                {
                    "category": "external",
                    "summary": "Reference - redhat",
                    "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-1556"
                }
            ],
            "scores": [
                {
                    "cvss_v3": {
                        "version": "3.1",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N",
                        "baseScore": 7.7,
                        "baseSeverity": "HIGH"
                    },
                    "products": [
                        "CSAFPID-5919309",
                        "CSAFPID-5985718"
                    ]
                }
            ],
            "title": "CVE-2026-1556"
        }
    ]
}