{ "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-2026-33217", "tracking": { "current_release_date": "2026-03-29T01:16:13.767735Z", "generator": { "date": "2026-02-17T15:00:00Z", "engine": { "name": "V.E.L.M.A", "version": "1.7" } }, "id": "CVE-2026-33217", "initial_release_date": "2026-03-24T23:11:54.391939Z", "revision_history": [ { "date": "2026-03-24T23:11:54.391939Z", "number": "1", "summary": "CVE created.| Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (3).| CWES updated (1)." }, { "date": "2026-03-24T23:12:02.335490Z", "number": "2", "summary": "NCSC Score created." }, { "date": "2026-03-25T11:36:08.203793Z", "number": "3", "summary": "NCSC Score updated." }, { "date": "2026-03-25T13:15:09.653578Z", "number": "4", "summary": "Source connected.| CVE status created. (valid)| Products connected (2).| References created (13)." }, { "date": "2026-03-25T13:15:12.282713Z", "number": "5", "summary": "NCSC Score updated." }, { "date": "2026-03-25T18:12:46.509160Z", "number": "6", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products connected (2).| References created (2).| CWES updated (1)." }, { "date": "2026-03-25T18:12:48.762183Z", "number": "7", "summary": "NCSC Score updated." }, { "date": "2026-03-25T20:39:20.636660Z", "number": "8", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products connected (2).| References created (2).| CWES updated (1).| Unknown change." }, { "date": "2026-03-25T20:39:23.007909Z", "number": "9", "summary": "NCSC Score updated." }, { "date": "2026-03-25T20:53:11.159287Z", "number": "10", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (2).| CWES updated (1)." }, { "date": "2026-03-25T20:53:25.974153Z", "number": "11", "summary": "NCSC Score updated." }, { "date": "2026-03-26T00:29:12.037368Z", "number": "12", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products connected (4).| Product Identifiers created (2).| Product Remediations created (4).| References created (4).| CWES updated (1).| Vendor_assessment created." }, { "date": "2026-03-26T00:29:15.536357Z", "number": "13", "summary": "NCSC Score updated." }, { "date": "2026-03-26T12:44:25.193984Z", "number": "14", "summary": "Source created.| CVE status created. (valid)| Description created for source.| Products connected (1)." }, { "date": "2026-03-26T12:44:27.233235Z", "number": "15", "summary": "NCSC Score updated." }, { "date": "2026-03-26T15:02:19.494861Z", "number": "16", "summary": "Source connected.| CVE status created. (valid)| EPSS created." }, { "date": "2026-03-26T15:02:29.273750Z", "number": "17", "summary": "NCSC Score updated." }, { "date": "2026-03-26T17:27:56.950128Z", "number": "18", "summary": "Products connected (2).| Product Identifiers created (2)." }, { "date": "2026-03-26T17:28:00.323963Z", "number": "19", "summary": "NCSC Score updated." }, { "date": "2026-03-27T00:14:04.002773Z", "number": "20", "summary": "Source created.| CVE status created. (valid)| Description created for source.| References created (2)." }, { "date": "2026-03-28T07:57:40.874025Z", "number": "21", "summary": "References created (1)." }, { "date": "2026-03-28T07:57:50.732817Z", "number": "22", "summary": "NCSC Score updated." }, { "date": "2026-03-28T08:10:34.704161Z", "number": "23", "summary": "References removed (1)." }, { "date": "2026-03-29T01:16:11.147268Z", "number": "24", "summary": "References created (1)." } ], "status": "interim", "version": "24" } }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:rpm/unknown", "product": { "name": "vers:rpm/unknown", "product_id": "CSAFPID-2552008", "product_identification_helper": { "cpe": "cpe:/a:redhat:multicluster_globalhub" } } } ], "category": "product_name", "name": "Multicluster Global Hub" }, { "branches": [ { "category": "product_version_range", "name": "vers:rpm/4", "product": { "name": "vers:rpm/4", "product_id": "CSAFPID-1439328", "product_identification_helper": { "cpe": "cpe:/a:redhat:openshift:4" } } } ], "category": "product_name", "name": "Red Hat OpenShift Container Platform 4" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:rpm/unknown", "product": { "name": "vers:rpm/unknown", "product_id": "CSAFPID-2914734" } } ], "category": "product_name", "name": "multicluster-globalhub-grafana-rhel9" } ], "category": "product_family", "name": "Multicluster Global Hub" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:rpm/unknown", "product": { "name": "vers:rpm/unknown", "product_id": "CSAFPID-2257522" } } ], "category": "product_name", "name": "oc-mirror-plugin-rhel9" } ], "category": "product_family", "name": "Red Hat OpenShift Container Platform 4" } ], "category": "vendor", "name": "Red Hat" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/<2.11.15", "product": { "name": "vers:unknown/<2.11.15", "product_id": "CSAFPID-5906252" } }, { "category": "product_version_range", "name": "vers:unknown/<2.12.6", "product": { "name": "vers:unknown/<2.12.6", "product_id": "CSAFPID-5906253" } } ], "category": "product_name", "name": "NATS Server" } ], "category": "vendor", "name": "Open Source" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/<2.11.15", "product": { "name": "vers:unknown/<2.11.15", "product_id": "CSAFPID-5903111" } }, { "category": "product_version_range", "name": "vers:unknown/>=0|<2.11.15", "product": { "name": "vers:unknown/>=0|<2.11.15", "product_id": "CSAFPID-5907189" } }, { "category": "product_version_range", "name": "vers:unknown/>=2.12.0-rc.1|<2.12.6", "product": { "name": "vers:unknown/>=2.12.0-rc.1|<2.12.6", "product_id": "CSAFPID-5903112" } } ], "category": "product_name", "name": "Nats Server" } ], "category": "vendor", "name": "Nats" }, { "branches": [ { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:deb/unknown", "product": { "name": "vers:deb/unknown", "product_id": "CSAFPID-2649998" } } ], "category": "product_name", "name": "nats-server" } ], "category": "product_family", "name": "bookworm" } ], "category": "vendor", "name": "Debian" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/<2.11.15", "product": { "name": "vers:unknown/<2.11.15", "product_id": "CSAFPID-5918227", "product_identification_helper": { "cpe": "cpe:2.3:a:linuxfoundation:nats-server:*:*:*:*:*:*:*:*" } } }, { "category": "product_version_range", "name": "vers:unknown/>=2.12.0|<2.12.6", "product": { "name": "vers:unknown/>=2.12.0|<2.12.6", "product_id": "CSAFPID-5918228", "product_identification_helper": { "cpe": "cpe:2.3:a:linuxfoundation:nats-server:*:*:*:*:*:*:*:*" } } } ], "category": "product_name", "name": "nats-server" } ], "category": "vendor", "name": "linuxfoundation" } ] }, "vulnerabilities": [ { "cve": "CVE-2026-33217", "cwe": { "id": "CWE-863", "name": "Incorrect Authorization" }, "notes": [ { "category": "description", "text": "### Background\n\nNATS.io is a high performance open source pub-sub distributed communication technology, built for the cloud, on-premise, IoT, and edge computing.\n\nThe nats-server provides an MQTT client interface.\n\n### Problem Description\n\nWhen using ACLs on message subjects, these ACLs were not applied in the `$MQTT.>` namespace, allowing MQTT clients to bypass ACL checks for MQTT subjects.\n\n### Affected Versions\n\nAny version before v2.12.6 or v2.11.15\n\n### Workarounds\n\nNone.", "title": "github - https://api.github.com/advisories/GHSA-jxxm-27vp-c3m5" }, { "category": "description", "text": "### Background\n\nNATS.io is a high performance open source pub-sub distributed communication technology, built for the cloud, on-premise, IoT, and edge computing.\n\nThe nats-server provides an MQTT client interface.\n\n### Problem Description\n\nWhen using ACLs on message subjects, these ACLs were not applied in the `$MQTT.>` namespace, allowing MQTT clients to bypass ACL checks for MQTT subjects.\n\n### Affected Versions\n\nAny version before v2.12.6 or v2.11.15\n\n### Workarounds\n\nNone.", "title": "osv - https://www.googleapis.com/download/storage/v1/b/osv-vulnerabilities/o/Go%2FGHSA-jxxm-27vp-c3m5.json?alt=media" }, { "category": "description", "text": "NATS-Server is a High-Performance server for NATS.io, a cloud and edge native messaging system. Prior to versions 2.11.15 and 2.12.6, when using ACLs on message subjects, these ACLs were not applied in the `$MQTT.>` namespace, allowing MQTT clients to bypass ACL checks for MQTT subjects. Versions 2.11.15 and 2.12.6 contain a fix. No known workarounds are available.", "title": "cveprojectv5 - https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/33xxx/CVE-2026-33217.json" }, { "category": "description", "text": "NATS-Server is a High-Performance server for NATS.io, a cloud and edge native messaging system. Prior to versions 2.11.15 and 2.12.6, when using ACLs on message subjects, these ACLs were not applied in the `$MQTT.>` namespace, allowing MQTT clients to bypass ACL checks for MQTT subjects. Versions 2.11.15 and 2.12.6 contain a fix. No known workarounds are available.", "title": "nvd - https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-33217" }, { "category": "description", "text": "A flaw was found in NATS-Server. When Access Control Lists (ACLs) were configured for message subjects, these controls were not correctly applied within the `$MQTT.>` namespace. This oversight allows MQTT clients to bypass the intended ACL checks, potentially granting unauthorized access to sensitive message subjects. This vulnerability could lead to information disclosure or unauthorized message manipulation.", "title": "redhat - https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-33217.json" }, { "category": "description", "text": "NATS-Server is a High-Performance server for NATS.io, a cloud and edge native messaging system. Prior to versions 2.11.15 and 2.12.6, when using ACLs on message subjects, these ACLs were not applied in the `$MQTT.>` namespace, allowing MQTT clients to bypass ACL checks for MQTT subjects. Versions 2.11.15 and 2.12.6 contain a fix. No known workarounds are available.", "title": "debian - https://security-tracker.debian.org/tracker/CVE-2026-33217" }, { "category": "description", "text": "NATS allows MQTT clients to bypass ACL checks in github.com/nats-io/nats-server", "title": "osv - https://www.googleapis.com/download/storage/v1/b/osv-vulnerabilities/o/Go%2FGO-2026-4834.json?alt=media" }, { "category": "other", "text": "0.00025", "title": "EPSS" }, { "category": "other", "text": "4.3", "title": "NCSC Score" }, { "category": "other", "text": "There is product data available from source Certbundde, Is related to CWE-863 (Incorrect Authorization)", "title": "NCSC Score top increasing factors" }, { "category": "other", "text": "The value of the most recent EPSS score, Is related to (a version of) an uncommon product", "title": "NCSC Score top decreasing factors" }, { "category": "details", "text": "Severity: 3\n", "title": "Vendor assessment" } ], "product_status": { "known_affected": [ "CSAFPID-5906252", "CSAFPID-5906253", "CSAFPID-5903112", "CSAFPID-5907189", "CSAFPID-5903111", "CSAFPID-1439328", "CSAFPID-2257522", "CSAFPID-2552008", "CSAFPID-2914734", "CSAFPID-2649998", "CSAFPID-5918227", "CSAFPID-5918228" ] }, "references": [ { "category": "external", "summary": "Source - github", "url": "https://api.github.com/advisories/GHSA-jxxm-27vp-c3m5" }, { "category": "external", "summary": "Source - certbundde", "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-0858.json" }, { "category": "external", "summary": "Source - osv", "url": "https://www.googleapis.com/download/storage/v1/b/osv-vulnerabilities/o/Go%2FGHSA-jxxm-27vp-c3m5.json?alt=media" }, { "category": "external", "summary": "Source - cveprojectv5", "url": "https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/33xxx/CVE-2026-33217.json" }, { "category": "external", "summary": "Source - nvd", "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-33217" }, { "category": "external", "summary": "Source - redhat", "url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-33217.json" }, { "category": "external", "summary": "Source - debian", "url": "https://security-tracker.debian.org/tracker/CVE-2026-33217" }, { "category": "external", "summary": "Source - first", "url": "https://api.first.org/data/v1/epss?limit=10000&offset=0" }, { "category": "external", "summary": "Source - osv", "url": "https://www.googleapis.com/download/storage/v1/b/osv-vulnerabilities/o/Go%2FGO-2026-4834.json?alt=media" }, { "category": "external", "summary": "Reference - cveprojectv5; github; nvd; osv; redhat", "url": "https://github.com/nats-io/nats-server/security/advisories/GHSA-jxxm-27vp-c3m5" }, { "category": "external", "summary": "Reference - certbundde; cveprojectv5; github; nvd; osv; redhat", "url": "https://advisories.nats.io/CVE/secnote-2026-07.txt" }, { "category": "external", "summary": "Reference - github", "url": "https://github.com/advisories/GHSA-jxxm-27vp-c3m5" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-0858.json" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-0858" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://advisories.nats.io/CVE/secnote-2026-05.txt" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://advisories.nats.io/CVE/secnote-2026-06.txt" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://advisories.nats.io/CVE/secnote-2026-08.txt" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://advisories.nats.io/CVE/secnote-2026-09.txt" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://advisories.nats.io/CVE/secnote-2026-10.txt" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://advisories.nats.io/CVE/secnote-2026-11.txt" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://advisories.nats.io/CVE/secnote-2026-12.txt" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://advisories.nats.io/CVE/secnote-2026-13.txt" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://advisories.nats.io/CVE/secnote-2026-14.txt" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://advisories.nats.io/CVE/secnote-2026-15.txt" }, { "category": "external", "summary": "Reference - redhat", "url": "https://www.cve.org/CVERecord?id=CVE-2026-33217" }, { "category": "external", "summary": "Reference - github; redhat", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-33217" } ], "remediations": [ { "category": "mitigation", "details": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.", "product_ids": [ "CSAFPID-1439328", "CSAFPID-2257522", "CSAFPID-2552008", "CSAFPID-2914734" ] } ], "scores": [ { "cvss_v3": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N", "baseScore": 8.1, "baseSeverity": "HIGH" }, "products": [ "CSAFPID-1439328", "CSAFPID-2257522", "CSAFPID-2552008", "CSAFPID-2649998", "CSAFPID-2914734", "CSAFPID-5903111", "CSAFPID-5903112", "CSAFPID-5906252", "CSAFPID-5906253", "CSAFPID-5907189", "CSAFPID-5918227", "CSAFPID-5918228" ] } ], "title": "CVE-2026-33217" } ] }