{
    "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-2026-33578",
        "tracking": {
            "current_release_date": "2026-04-01T23:20:20.954640Z",
            "generator": {
                "date": "2026-02-17T15:00:00Z",
                "engine": {
                    "name": "V.E.L.M.A",
                    "version": "1.7"
                }
            },
            "id": "CVE-2026-33578",
            "initial_release_date": "2026-03-31T14:38:49.080641Z",
            "revision_history": [
                {
                    "date": "2026-03-31T14:38:49.080641Z",
                    "number": "1",
                    "summary": "CVE created.| Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products connected (2).| References created (3).| CWES updated (1)."
                },
                {
                    "date": "2026-03-31T14:38:52.254008Z",
                    "number": "2",
                    "summary": "NCSC Score created."
                },
                {
                    "date": "2026-03-31T15:26:23.207739Z",
                    "number": "3",
                    "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (3).| CWES updated (1)."
                },
                {
                    "date": "2026-03-31T15:26:27.363706Z",
                    "number": "4",
                    "summary": "NCSC Score updated."
                },
                {
                    "date": "2026-03-31T15:39:26.456683Z",
                    "number": "5",
                    "summary": "Unknown change."
                },
                {
                    "date": "2026-03-31T15:50:55.465174Z",
                    "number": "6",
                    "summary": "NCSC Score updated."
                },
                {
                    "date": "2026-03-31T18:26:49.887416Z",
                    "number": "7",
                    "summary": "CVSS updated."
                },
                {
                    "date": "2026-03-31T18:26:51.516390Z",
                    "number": "8",
                    "summary": "NCSC Score updated."
                },
                {
                    "date": "2026-03-31T18:39:01.598075Z",
                    "number": "9",
                    "summary": "CVSS updated."
                },
                {
                    "date": "2026-04-01T01:03:18.683471Z",
                    "number": "10",
                    "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (5).| CWES updated (1)."
                },
                {
                    "date": "2026-04-01T01:03:29.229682Z",
                    "number": "11",
                    "summary": "NCSC Score updated."
                },
                {
                    "date": "2026-04-01T05:38:52.972571Z",
                    "number": "12",
                    "summary": "Unknown change."
                },
                {
                    "date": "2026-04-01T11:29:14.111834Z",
                    "number": "13",
                    "summary": "Source connected.| CVE status created. (valid)| Products connected (1).| References created (20)."
                },
                {
                    "date": "2026-04-01T11:29:16.062726Z",
                    "number": "14",
                    "summary": "NCSC Score updated."
                },
                {
                    "date": "2026-04-01T15:14:14.744685Z",
                    "number": "15",
                    "summary": "Source connected.| CVE status created. (valid)| EPSS created."
                },
                {
                    "date": "2026-04-01T15:14:24.134577Z",
                    "number": "16",
                    "summary": "NCSC Score updated."
                },
                {
                    "date": "2026-04-01T22:59:39.737414Z",
                    "number": "17",
                    "summary": "Products created (1).| Product Identifiers created (1)."
                },
                {
                    "date": "2026-04-01T22:59:41.930746Z",
                    "number": "18",
                    "summary": "NCSC Score updated."
                }
            ],
            "status": "interim",
            "version": "18"
        }
    },
    "product_tree": {
        "branches": [
            {
                "branches": [
                    {
                        "branches": [
                            {
                                "category": "product_version_range",
                                "name": "vers:unknown/<2026.3.28",
                                "product": {
                                    "name": "vers:unknown/<2026.3.28",
                                    "product_id": "CSAFPID-5972664"
                                }
                            }
                        ],
                        "category": "product_name",
                        "name": "OpenClaw"
                    }
                ],
                "category": "vendor",
                "name": "Open Source"
            },
            {
                "branches": [
                    {
                        "branches": [
                            {
                                "category": "product_version_range",
                                "name": "vers:semver/2026.3.28",
                                "product": {
                                    "name": "vers:semver/2026.3.28",
                                    "product_id": "CSAFPID-5968864"
                                }
                            },
                            {
                                "category": "product_version_range",
                                "name": "vers:semver/<2026.3.28",
                                "product": {
                                    "name": "vers:semver/<2026.3.28",
                                    "product_id": "CSAFPID-5968863"
                                }
                            }
                        ],
                        "category": "product_name",
                        "name": "OpenClaw"
                    }
                ],
                "category": "vendor",
                "name": "OpenClaw"
            },
            {
                "branches": [
                    {
                        "branches": [
                            {
                                "category": "product_version_range",
                                "name": "vers:unknown/<2026.3.28",
                                "product": {
                                    "name": "vers:unknown/<2026.3.28",
                                    "product_id": "CSAFPID-5982833",
                                    "product_identification_helper": {
                                        "cpe": "cpe:2.3:a:openclaw:openclaw:*:*:*:*:*:node.js:*:*"
                                    }
                                }
                            }
                        ],
                        "category": "product_name",
                        "name": "openclaw"
                    }
                ],
                "category": "vendor",
                "name": "openclaw"
            }
        ]
    },
    "vulnerabilities": [
        {
            "cve": "CVE-2026-33578",
            "cwe": {
                "id": "CWE-863",
                "name": "Incorrect Authorization"
            },
            "notes": [
                {
                    "category": "description",
                    "text": "OpenClaw before 2026.3.28 contains a sender policy bypass vulnerability in the Google Chat and Zalouser extensions where route-level group allowlist policies silently downgrade to open policy. Attackers can exploit this policy resolution flaw to bypass sender restrictions and interact with bots despite configured allowlist restrictions.",
                    "title": "cveprojectv5 - https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/33xxx/CVE-2026-33578.json"
                },
                {
                    "category": "description",
                    "text": "OpenClaw before 2026.3.28 contains a sender policy bypass vulnerability in the Google Chat and Zalouser extensions where route-level group allowlist policies silently downgrade to open policy. Attackers can exploit this policy resolution flaw to bypass sender restrictions and interact with bots despite configured allowlist restrictions.",
                    "title": "nvd - https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-33578"
                },
                {
                    "category": "description",
                    "text": "## Summary\n\nWhen only a route-level group allowlist was configured, sender policy resolution silently downgraded from `allowlist` to `open` instead of preserving the configured group policy.\n\n## Impact\n\nAny member of an allowlisted Google Chat space or Zalouser group could interact with the bot even when the operator intended sender-level restrictions.\n\n## Affected Component\n\n`extensions/googlechat/src/monitor-access.ts, extensions/zalouser/src/monitor.ts`\n\n## Fixed Versions\n\n- Affected: `<= 2026.3.24`\n- Patched: `>= 2026.3.28`\n- Latest stable `2026.3.28` contains the fix.\n\n## Fix\n\nFixed by commit `e64a881ae0` (`Channels: preserve routed group policy`).",
                    "title": "github - https://api.github.com/advisories/GHSA-63mg-xp9j-jfcm"
                },
                {
                    "category": "other",
                    "text": "8e-05",
                    "title": "EPSS"
                },
                {
                    "category": "other",
                    "text": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N",
                    "title": "CVSSV4"
                },
                {
                    "category": "other",
                    "text": "5.3",
                    "title": "CVSSV4 base score"
                },
                {
                    "category": "other",
                    "text": "4.9",
                    "title": "NCSC Score"
                },
                {
                    "category": "other",
                    "text": "There is product data available from source Certbundde",
                    "title": "NCSC Score top increasing factors"
                },
                {
                    "category": "other",
                    "text": "The value of the most recent CVSS (V3) score, There is cwe data available from source Github",
                    "title": "NCSC Score top decreasing factors"
                }
            ],
            "product_status": {
                "known_affected": [
                    "CSAFPID-5968863",
                    "CSAFPID-5972664",
                    "CSAFPID-5982833"
                ],
                "known_not_affected": [
                    "CSAFPID-5968864"
                ]
            },
            "references": [
                {
                    "category": "external",
                    "summary": "Source - cveprojectv5",
                    "url": "https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/33xxx/CVE-2026-33578.json"
                },
                {
                    "category": "external",
                    "summary": "Source - nvd",
                    "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-33578"
                },
                {
                    "category": "external",
                    "summary": "Source - github",
                    "url": "https://api.github.com/advisories/GHSA-63mg-xp9j-jfcm"
                },
                {
                    "category": "external",
                    "summary": "Source - certbundde",
                    "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-0930.json"
                },
                {
                    "category": "external",
                    "summary": "Source - first",
                    "url": "https://api.first.org/data/v1/epss?limit=10000&offset=0"
                },
                {
                    "category": "external",
                    "summary": "Reference - certbundde; cveprojectv5; github; nvd",
                    "url": "https://github.com/openclaw/openclaw/security/advisories/GHSA-63mg-xp9j-jfcm"
                },
                {
                    "category": "external",
                    "summary": "Reference - cveprojectv5; github; nvd",
                    "url": "https://github.com/openclaw/openclaw/commit/e64a881ae0fb8af18e451163f4c2d611d60cc8e4"
                },
                {
                    "category": "external",
                    "summary": "Reference - cveprojectv5; github; nvd",
                    "url": "https://www.vulncheck.com/advisories/openclaw-sender-policy-allowlist-bypass-via-policy-downgrade-in-google-chat-and-zalouser-extensions"
                },
                {
                    "category": "external",
                    "summary": "Reference - github",
                    "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-33578"
                },
                {
                    "category": "external",
                    "summary": "Reference - github",
                    "url": "https://github.com/advisories/GHSA-63mg-xp9j-jfcm"
                },
                {
                    "category": "external",
                    "summary": "Reference - certbundde",
                    "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-0930.json"
                },
                {
                    "category": "external",
                    "summary": "Reference - certbundde",
                    "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-0930"
                },
                {
                    "category": "external",
                    "summary": "Reference - certbundde",
                    "url": "https://github.com/openclaw/openclaw/security/advisories/GHSA-8689-gm9g-jgr6"
                },
                {
                    "category": "external",
                    "summary": "Reference - certbundde",
                    "url": "https://github.com/openclaw/openclaw/security/advisories/GHSA-v2v2-f783-358j"
                },
                {
                    "category": "external",
                    "summary": "Reference - certbundde",
                    "url": "https://github.com/openclaw/openclaw/security/advisories/GHSA-3cw3-5vxw-g2h3"
                },
                {
                    "category": "external",
                    "summary": "Reference - certbundde",
                    "url": "https://github.com/openclaw/openclaw/security/advisories/GHSA-2x4x-cc5g-qmmg"
                },
                {
                    "category": "external",
                    "summary": "Reference - certbundde",
                    "url": "https://github.com/openclaw/openclaw/security/advisories/GHSA-9528-x887-j2fp"
                },
                {
                    "category": "external",
                    "summary": "Reference - certbundde",
                    "url": "https://github.com/openclaw/openclaw/security/advisories/GHSA-qxgf-hmcj-3xw3"
                },
                {
                    "category": "external",
                    "summary": "Reference - certbundde",
                    "url": "https://github.com/openclaw/openclaw/security/advisories/GHSA-98hh-7ghg-x6rq"
                },
                {
                    "category": "external",
                    "summary": "Reference - certbundde",
                    "url": "https://github.com/openclaw/openclaw/security/advisories/GHSA-jp4j-q5fc-58gv"
                },
                {
                    "category": "external",
                    "summary": "Reference - certbundde",
                    "url": "https://github.com/openclaw/openclaw/security/advisories/GHSA-2pr2-hcv6-7gwv"
                },
                {
                    "category": "external",
                    "summary": "Reference - certbundde",
                    "url": "https://github.com/openclaw/openclaw/security/advisories/GHSA-p4x4-2r7f-wjxg"
                },
                {
                    "category": "external",
                    "summary": "Reference - certbundde",
                    "url": "https://github.com/openclaw/openclaw/security/advisories/GHSA-v8wv-jg3q-qwpq"
                },
                {
                    "category": "external",
                    "summary": "Reference - certbundde",
                    "url": "https://github.com/openclaw/openclaw/security/advisories/GHSA-m866-6qv5-p2fg"
                },
                {
                    "category": "external",
                    "summary": "Reference - certbundde",
                    "url": "https://github.com/openclaw/openclaw/security/advisories/GHSA-hc5h-pmr3-3497"
                },
                {
                    "category": "external",
                    "summary": "Reference - certbundde",
                    "url": "https://github.com/openclaw/openclaw/security/advisories/GHSA-g86v-f9qv-rh6m"
                },
                {
                    "category": "external",
                    "summary": "Reference - certbundde",
                    "url": "https://github.com/openclaw/openclaw/security/advisories/GHSA-5r8f-96gm-5j6g"
                },
                {
                    "category": "external",
                    "summary": "Reference - certbundde",
                    "url": "https://github.com/openclaw/openclaw/security/advisories/GHSA-5h2w-qmfp-ggp6"
                },
                {
                    "category": "external",
                    "summary": "Reference - certbundde",
                    "url": "https://github.com/openclaw/openclaw/security/advisories/GHSA-jccr-rrw2-vc8h"
                }
            ],
            "scores": [
                {
                    "cvss_v3": {
                        "version": "3.1",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                        "baseScore": 9.8,
                        "baseSeverity": "CRITICAL"
                    },
                    "products": [
                        "CSAFPID-5968863",
                        "CSAFPID-5972664",
                        "CSAFPID-5982833"
                    ]
                }
            ],
            "title": "CVE-2026-33578"
        }
    ]
}