{
    "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-2026-33732",
        "tracking": {
            "current_release_date": "2026-04-02T20:09:11.647491Z",
            "generator": {
                "date": "2026-02-17T15:00:00Z",
                "engine": {
                    "name": "V.E.L.M.A",
                    "version": "1.7"
                }
            },
            "id": "CVE-2026-33732",
            "initial_release_date": "2026-03-26T17:38:55.915760Z",
            "revision_history": [
                {
                    "date": "2026-03-26T17:38:55.915760Z",
                    "number": "1",
                    "summary": "CVE created.| Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products created (1).| References created (3).| CWES updated (1)."
                },
                {
                    "date": "2026-03-26T17:38:58.154300Z",
                    "number": "2",
                    "summary": "NCSC Score created."
                },
                {
                    "date": "2026-03-26T17:40:59.171063Z",
                    "number": "3",
                    "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (4).| CWES updated (1)."
                },
                {
                    "date": "2026-03-26T17:41:11.018469Z",
                    "number": "4",
                    "summary": "NCSC Score updated."
                },
                {
                    "date": "2026-03-26T18:20:54.993517Z",
                    "number": "5",
                    "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products created (1).| References created (3).| CWES updated (1)."
                },
                {
                    "date": "2026-03-26T18:27:22.645140Z",
                    "number": "6",
                    "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (3).| CWES updated (1)."
                },
                {
                    "date": "2026-03-26T18:27:24.959155Z",
                    "number": "7",
                    "summary": "NCSC Score updated."
                },
                {
                    "date": "2026-03-27T19:47:15.548028Z",
                    "number": "8",
                    "summary": "Unknown change."
                },
                {
                    "date": "2026-03-27T20:56:21.747674Z",
                    "number": "9",
                    "summary": "Source connected.| CVE status created. (valid)| EPSS created."
                },
                {
                    "date": "2026-03-27T20:56:24.660570Z",
                    "number": "10",
                    "summary": "NCSC Score updated."
                },
                {
                    "date": "2026-03-28T07:57:19.651275Z",
                    "number": "11",
                    "summary": "References created (1)."
                },
                {
                    "date": "2026-04-02T20:09:01.872188Z",
                    "number": "12",
                    "summary": "Products created (1).| Product Identifiers created (1)."
                },
                {
                    "date": "2026-04-02T20:09:04.092286Z",
                    "number": "13",
                    "summary": "NCSC Score updated."
                }
            ],
            "status": "interim",
            "version": "13"
        }
    },
    "product_tree": {
        "branches": [
            {
                "branches": [
                    {
                        "branches": [
                            {
                                "category": "product_version_range",
                                "name": "vers:unknown/<0.11.13",
                                "product": {
                                    "name": "vers:unknown/<0.11.13",
                                    "product_id": "CSAFPID-5985370",
                                    "product_identification_helper": {
                                        "cpe": "cpe:2.3:a:h3:srvx:*:*:*:*:*:node.js:*:*"
                                    }
                                }
                            }
                        ],
                        "category": "product_name",
                        "name": "srvx"
                    }
                ],
                "category": "vendor",
                "name": "h3"
            },
            {
                "branches": [
                    {
                        "branches": [
                            {
                                "category": "product_version_range",
                                "name": "vers:unknown/<0.11.13",
                                "product": {
                                    "name": "vers:unknown/<0.11.13",
                                    "product_id": "CSAFPID-5918256"
                                }
                            },
                            {
                                "category": "product_version_range",
                                "name": "vers:unknown/>=0|<0.11.13",
                                "product": {
                                    "name": "vers:unknown/>=0|<0.11.13",
                                    "product_id": "CSAFPID-5918908"
                                }
                            }
                        ],
                        "category": "product_name",
                        "name": "srvx"
                    }
                ],
                "category": "vendor",
                "name": "h3js"
            }
        ]
    },
    "vulnerabilities": [
        {
            "cve": "CVE-2026-33732",
            "cwe": {
                "id": "CWE-706",
                "name": "Use of Incorrectly-Resolved Name or Reference"
            },
            "notes": [
                {
                    "category": "description",
                    "text": "srvx is a universal server based on web standards. Prior to version 0.11.13, a pathname parsing discrepancy in srvx's `FastURL` allows middleware bypass on the Node.js adapter when a raw HTTP request uses an absolute URI with a non-standard scheme (e.g. `file://`). Starting in version 0.11.13, the `FastURL` constructor now deopts to native `URL` for any string not starting with `/`, ensuring consistent pathname resolution.",
                    "title": "cveprojectv5 - https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/33xxx/CVE-2026-33732.json"
                },
                {
                    "category": "description",
                    "text": "## Summary\n\nA pathname parsing discrepancy in srvx's `FastURL` allows middleware bypass on the Node.js adapter when a raw HTTP request uses an absolute URI with a non-standard scheme (e.g. `file://`).\n\n## Details\n\nWhen Node.js receives an absolute URI in the request line (e.g. `GET file://hehe?/internal/run HTTP/1.1`), `req.url` is set verbatim to `file://hehe?/internal/run`. Since this doesn't start with `/`, `NodeRequestURL` passes it directly to `FastURL` as a string, which stores it in `#href` for lazy manual parsing.\n\n`FastURL#getPos()` locates the pathname by finding `://` then scanning for the next `/` — but this fails for URLs like `file://hehe?/internal/run` where a `?` appears before the first `/` after the authority. The manual parser extracts pathname as `/internal/run`, while native `URL` correctly parses it as pathname `/` with search `?/internal/run`.\n\nThis discrepancy means the router (using the fast-path) matches `/internal/run`, but if any middleware triggers a deopt to native `URL` (e.g. by accessing `hostname`), subsequent middleware sees a different pathname — bypassing route-based middleware guards.\n\nThis is a bypass of [CVE-2026-33131](https://github.com/h3js/h3/security/advisories/GHSA-3vj8-jmxq-cgj5).\n\n## Impact\n\nRoute-based middleware (auth guards, rate limiters, etc.) can be bypassed on the Node.js adapter when a prior middleware triggers `FastURL` deopt. Requires sending a raw HTTP request (not possible from browsers).\n\n## Fix\n\nsrvx `FastURL` constructor now deopts to native `URL` for any string not starting with `/`, ensuring consistent pathname resolution.",
                    "title": "github - https://api.github.com/advisories/GHSA-p36q-q72m-gchr"
                },
                {
                    "category": "description",
                    "text": "## Summary\n\nA pathname parsing discrepancy in srvx's `FastURL` allows middleware bypass on the Node.js adapter when a raw HTTP request uses an absolute URI with a non-standard scheme (e.g. `file://`).\n\n## Details\n\nWhen Node.js receives an absolute URI in the request line (e.g. `GET file://hehe?/internal/run HTTP/1.1`), `req.url` is set verbatim to `file://hehe?/internal/run`. Since this doesn't start with `/`, `NodeRequestURL` passes it directly to `FastURL` as a string, which stores it in `#href` for lazy manual parsing.\n\n`FastURL#getPos()` locates the pathname by finding `://` then scanning for the next `/` — but this fails for URLs like `file://hehe?/internal/run` where a `?` appears before the first `/` after the authority. The manual parser extracts pathname as `/internal/run`, while native `URL` correctly parses it as pathname `/` with search `?/internal/run`.\n\nThis discrepancy means the router (using the fast-path) matches `/internal/run`, but if any middleware triggers a deopt to native `URL` (e.g. by accessing `hostname`), subsequent middleware sees a different pathname — bypassing route-based middleware guards.\n\nThis is a bypass of [CVE-2026-33131](https://github.com/h3js/h3/security/advisories/GHSA-3vj8-jmxq-cgj5).\n\n## Impact\n\nRoute-based middleware (auth guards, rate limiters, etc.) can be bypassed on the Node.js adapter when a prior middleware triggers `FastURL` deopt. Requires sending a raw HTTP request (not possible from browsers).\n\n## Fix\n\nsrvx `FastURL` constructor now deopts to native `URL` for any string not starting with `/`, ensuring consistent pathname resolution.",
                    "title": "osv - https://www.googleapis.com/download/storage/v1/b/osv-vulnerabilities/o/npm%2FGHSA-p36q-q72m-gchr.json?alt=media"
                },
                {
                    "category": "description",
                    "text": "srvx is a universal server based on web standards. Prior to version 0.11.13, a pathname parsing discrepancy in srvx's `FastURL` allows middleware bypass on the Node.js adapter when a raw HTTP request uses an absolute URI with a non-standard scheme (e.g. `file://`). Starting in version 0.11.13, the `FastURL` constructor now deopts to native `URL` for any string not starting with `/`, ensuring consistent pathname resolution.",
                    "title": "nvd - https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-33732"
                },
                {
                    "category": "other",
                    "text": "0.00027",
                    "title": "EPSS"
                },
                {
                    "category": "other",
                    "text": "4.3",
                    "title": "NCSC Score"
                },
                {
                    "category": "other",
                    "text": "There is cwe data available from source Nvd, The value of the most recent EPSS score",
                    "title": "NCSC Score top decreasing factors"
                }
            ],
            "product_status": {
                "known_affected": [
                    "CSAFPID-5918256",
                    "CSAFPID-5918908",
                    "CSAFPID-5985370"
                ]
            },
            "references": [
                {
                    "category": "external",
                    "summary": "Source - cveprojectv5",
                    "url": "https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/33xxx/CVE-2026-33732.json"
                },
                {
                    "category": "external",
                    "summary": "Source - github",
                    "url": "https://api.github.com/advisories/GHSA-p36q-q72m-gchr"
                },
                {
                    "category": "external",
                    "summary": "Source - osv",
                    "url": "https://www.googleapis.com/download/storage/v1/b/osv-vulnerabilities/o/npm%2FGHSA-p36q-q72m-gchr.json?alt=media"
                },
                {
                    "category": "external",
                    "summary": "Source - nvd",
                    "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-33732"
                },
                {
                    "category": "external",
                    "summary": "Source - first",
                    "url": "https://api.first.org/data/v1/epss?limit=10000&offset=0"
                },
                {
                    "category": "external",
                    "summary": "Reference - cveprojectv5; github; nvd; osv",
                    "url": "https://github.com/h3js/h3/security/advisories/GHSA-p36q-q72m-gchr"
                },
                {
                    "category": "external",
                    "summary": "Reference - cveprojectv5; github; nvd; osv",
                    "url": "https://github.com/h3js/srvx/commit/de0d69901c357f36a39b7e13eebef6c930652baa"
                },
                {
                    "category": "external",
                    "summary": "Reference - cveprojectv5; github; nvd; osv",
                    "url": "https://github.com/h3js/srvx/releases/tag/v0.11.13"
                },
                {
                    "category": "external",
                    "summary": "Reference - github",
                    "url": "https://github.com/advisories/GHSA-p36q-q72m-gchr"
                },
                {
                    "category": "external",
                    "summary": "Reference - github",
                    "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-33732"
                }
            ],
            "scores": [
                {
                    "cvss_v3": {
                        "version": "3.1",
                        "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N",
                        "baseScore": 4.8,
                        "baseSeverity": "MEDIUM"
                    },
                    "products": [
                        "CSAFPID-5918256",
                        "CSAFPID-5918908",
                        "CSAFPID-5985370"
                    ]
                }
            ],
            "title": "CVE-2026-33732"
        }
    ]
}