{ "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-2026-29785", "tracking": { "current_release_date": "2026-04-02T13:11:46.504606Z", "generator": { "date": "2026-02-17T15:00:00Z", "engine": { "name": "V.E.L.M.A", "version": "1.7" } }, "id": "CVE-2026-29785", "initial_release_date": "2026-03-10T11:05:59.730071Z", "revision_history": [ { "date": "2026-03-10T11:05:59.730071Z", "number": "1", "summary": "CVE created.| Source connected.| CVE status created. (valid)| Products connected (2).| References created (4)." }, { "date": "2026-03-10T11:06:01.386286Z", "number": "2", "summary": "NCSC Score created." }, { "date": "2026-03-24T22:21:12.101853Z", "number": "3", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (4).| CWES updated (1)." }, { "date": "2026-03-24T22:21:17.358446Z", "number": "4", "summary": "NCSC Score updated." }, { "date": "2026-03-25T18:13:55.942097Z", "number": "5", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products created (2).| References created (3).| CWES updated (1)." }, { "date": "2026-03-25T18:13:58.112449Z", "number": "6", "summary": "NCSC Score updated." }, { "date": "2026-03-25T20:42:11.098276Z", "number": "7", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products created (1).| Products connected (1).| References created (3).| CWES updated (1)." }, { "date": "2026-03-25T20:42:14.263814Z", "number": "8", "summary": "NCSC Score updated." }, { "date": "2026-03-25T20:53:10.614543Z", "number": "9", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (3).| CWES updated (1)." }, { "date": "2026-03-25T20:53:12.387594Z", "number": "10", "summary": "NCSC Score updated." }, { "date": "2026-03-26T00:29:13.503059Z", "number": "11", "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 (5).| CWES updated (1).| Vendor_assessment created." }, { "date": "2026-03-26T00:29:15.536357Z", "number": "12", "summary": "NCSC Score updated." }, { "date": "2026-03-26T12:44:24.072494Z", "number": "13", "summary": "Source created.| CVE status created. (valid)| Description created for source.| Products connected (1)." }, { "date": "2026-03-26T12:44:26.244231Z", "number": "14", "summary": "NCSC Score updated." }, { "date": "2026-03-26T15:07:48.499659Z", "number": "15", "summary": "Source connected.| CVE status created. (valid)| EPSS created." }, { "date": "2026-03-26T15:07:50.838850Z", "number": "16", "summary": "NCSC Score updated." }, { "date": "2026-03-26T17:27:45.946251Z", "number": "17", "summary": "Products created (1).| Product Identifiers created (2).| Products connected (1)." }, { "date": "2026-03-26T17:27:48.744167Z", "number": "18", "summary": "NCSC Score updated." }, { "date": "2026-03-27T00:13:43.595937Z", "number": "19", "summary": "Source created.| CVE status created. (valid)| Description created for source.| References created (3)." }, { "date": "2026-03-27T00:13:46.362445Z", "number": "20", "summary": "NCSC Score updated." }, { "date": "2026-03-28T07:41:57.407864Z", "number": "21", "summary": "Unknown change." }, { "date": "2026-03-28T07:41:59.486531Z", "number": "22", "summary": "NCSC Score updated." }, { "date": "2026-03-28T07:57:41.886481Z", "number": "23", "summary": "References created (1)." }, { "date": "2026-03-28T08:10:35.666412Z", "number": "24", "summary": "References removed (1)." }, { "date": "2026-03-29T01:16:11.885349Z", "number": "25", "summary": "References created (1)." }, { "date": "2026-04-02T12:19:53.750217Z", "number": "26", "summary": "Source connected.| CVE status created. (valid)| Description created for source.| CVSS created.| CWES updated (1)." }, { "date": "2026-04-02T12:19:56.843904Z", "number": "27", "summary": "NCSC Score updated." } ], "status": "interim", "version": "27" } }, "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/=0|<2.11.14", "product": { "name": "vers:unknown/>=0|<2.11.14", "product_id": "CSAFPID-5907270" } }, { "category": "product_version_range", "name": "vers:unknown/>=2.12.0-rc.1|<2.12.5", "product": { "name": "vers:unknown/>=2.12.0-rc.1|<2.12.5", "product_id": "CSAFPID-5907271" } } ], "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/<2.11.14", "product": { "name": "vers:unknown/<2.11.14", "product_id": "CSAFPID-5918237", "product_identification_helper": { "cpe": "cpe:2.3:a:linuxfoundation:nats-server:*:*:*:*:*:*:*:*" } } }, { "category": "product_version_range", "name": "vers:unknown/>=2.12.0|<2.12.5", "product": { "name": "vers:unknown/>=2.12.0|<2.12.5", "product_id": "CSAFPID-5918235", "product_identification_helper": { "cpe": "cpe:2.3:a:linuxfoundation:nats-server:*:*:*:*:*:*:*:*" } } } ], "category": "product_name", "name": "nats-server" } ], "category": "vendor", "name": "linuxfoundation" } ] }, "vulnerabilities": [ { "cve": "CVE-2026-29785", "cwe": { "id": "CWE-476", "name": "NULL Pointer Dereference" }, "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\nWhen configured to accept leafnode connections (for a hub/spoke topology of multiple nats-servers), then the default configuration allows for negotiating compression; a malicious remote NATS server can trigger a server panic via that compression.\n\n### Problem Description\n\nIf the nats-server has the \"leafnode\" configuration enabled (not default), then anyone who can connect can crash the nats-server by triggering a panic. This happens pre-authentication and requires that compression be enabled (which it is, by default, when leafnodes are used).\n\nContext: a NATS server can form various clustering topologies, including local clusters, and superclusters of clusters, but leafnodes allow for separate administrative domains to link together with limited data communication; eg, a server in a moving vehicle might use a local leafnode for agents to connect to, and sync up to a central service as and when available. The leafnode configuration here is where the central server allows other NATS servers to connect into it, almost like regular NATS clients. Documentation examples typically use port 7422 for leafnode communications.\n\n### Affected Versions\n\nVersion 2, prior to v2.11.14 or v2.12.5\n\n### Workarounds\n\nDisable compression on the leafnode port:\n\n```\nleafnodes {\n port: 7422\n compression: off\n}\n```", "title": "github - https://api.github.com/advisories/GHSA-52jh-2xxh-pwh6" }, { "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\nWhen configured to accept leafnode connections (for a hub/spoke topology of multiple nats-servers), then the default configuration allows for negotiating compression; a malicious remote NATS server can trigger a server panic via that compression.\n\n### Problem Description\n\nIf the nats-server has the \"leafnode\" configuration enabled (not default), then anyone who can connect can crash the nats-server by triggering a panic. This happens pre-authentication and requires that compression be enabled (which it is, by default, when leafnodes are used).\n\nContext: a NATS server can form various clustering topologies, including local clusters, and superclusters of clusters, but leafnodes allow for separate administrative domains to link together with limited data communication; eg, a server in a moving vehicle might use a local leafnode for agents to connect to, and sync up to a central service as and when available. The leafnode configuration here is where the central server allows other NATS servers to connect into it, almost like regular NATS clients. Documentation examples typically use port 7422 for leafnode communications.\n\n### Affected Versions\n\nVersion 2, prior to v2.11.14 or v2.12.5\n\n### Workarounds\n\nDisable compression on the leafnode port:\n\n```\nleafnodes {\n port: 7422\n compression: off\n}\n```", "title": "osv - https://www.googleapis.com/download/storage/v1/b/osv-vulnerabilities/o/Go%2FGHSA-52jh-2xxh-pwh6.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 2.11.14 and 2.12.5, if the nats-server has the \"leafnode\" configuration enabled (not default), then anyone who can connect can crash the nats-server by triggering a panic. This happens pre-authentication and requires that compression be enabled (which it is, by default, when leafnodes are used). Versions 2.11.14 and 2.12.5 contain a fix. As a workaround, disable compression on the leafnode port.", "title": "cveprojectv5 - https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/29xxx/CVE-2026-29785.json" }, { "category": "description", "text": "NATS-Server is a High-Performance server for NATS.io, a cloud and edge native messaging system. Prior to versions 2.11.14 and 2.12.5, if the nats-server has the \"leafnode\" configuration enabled (not default), then anyone who can connect can crash the nats-server by triggering a panic. This happens pre-authentication and requires that compression be enabled (which it is, by default, when leafnodes are used). Versions 2.11.14 and 2.12.5 contain a fix. As a workaround, disable compression on the leafnode port.", "title": "nvd - https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-29785" }, { "category": "description", "text": "A flaw was found in NATS-Server. A remote attacker can exploit this vulnerability by connecting to a NATS-Server instance where the 'leafnode' configuration is enabled and compression is active. This pre-authentication flaw allows the attacker to trigger a server crash, resulting in a Denial of Service (DoS) for the affected system.", "title": "redhat - https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-29785.json" }, { "category": "description", "text": "NATS-Server is a High-Performance server for NATS.io, a cloud and edge native messaging system. Prior to versions 2.11.14 and 2.12.5, if the nats-server has the \"leafnode\" configuration enabled (not default), then anyone who can connect can crash the nats-server by triggering a panic. This happens pre-authentication and requires that compression be enabled (which it is, by default, when leafnodes are used). Versions 2.11.14 and 2.12.5 contain a fix. As a workaround, disable compression on the leafnode port.", "title": "debian - https://security-tracker.debian.org/tracker/CVE-2026-29785" }, { "category": "description", "text": "NATS Server panic via malicious compression on leafnode port in github.com/nats-io/nats-server", "title": "osv - https://www.googleapis.com/download/storage/v1/b/osv-vulnerabilities/o/Go%2FGO-2026-4829.json?alt=media" }, { "category": "description", "text": "NATS Server panic via malicious compression on leafnode port", "title": "microsoft - https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/2026-Mar" }, { "category": "other", "text": "0.00073", "title": "EPSS" }, { "category": "other", "text": "4.1", "title": "NCSC Score" }, { "category": "other", "text": "There is product data available from source Certbundde", "title": "NCSC Score top increasing factors" }, { "category": "other", "text": "Is related to a product by vendor Debian, Is related to (a version of) an uncommon product, The value of the most recent EPSS score, Is related to a product by vendor Open Source", "title": "NCSC Score top decreasing factors" }, { "category": "details", "text": "Severity: 3\n", "title": "Vendor assessment" } ], "product_status": { "known_affected": [ "CSAFPID-5774317", "CSAFPID-5774318", "CSAFPID-5907270", "CSAFPID-5907271", "CSAFPID-5909682", "CSAFPID-1439328", "CSAFPID-2257522", "CSAFPID-2552008", "CSAFPID-2914734", "CSAFPID-2649998", "CSAFPID-5918235", "CSAFPID-5918237" ] }, "references": [ { "category": "external", "summary": "Source - certbundde", "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-0641.json" }, { "category": "external", "summary": "Source - github", "url": "https://api.github.com/advisories/GHSA-52jh-2xxh-pwh6" }, { "category": "external", "summary": "Source - osv", "url": "https://www.googleapis.com/download/storage/v1/b/osv-vulnerabilities/o/Go%2FGHSA-52jh-2xxh-pwh6.json?alt=media" }, { "category": "external", "summary": "Source - cveprojectv5", "url": "https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/29xxx/CVE-2026-29785.json" }, { "category": "external", "summary": "Source - nvd", "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-29785" }, { "category": "external", "summary": "Source - redhat", "url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-29785.json" }, { "category": "external", "summary": "Source - debian", "url": "https://security-tracker.debian.org/tracker/CVE-2026-29785" }, { "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-2026-4829.json?alt=media" }, { "category": "external", "summary": "Source - microsoft", "url": "https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/2026-Mar" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-0641.json" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-0641" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://advisories.nats.io/CVE/secnote-2026-03.txt" }, { "category": "external", "summary": "Reference - certbundde; cveprojectv5; github; nvd; osv; redhat", "url": "https://advisories.nats.io/CVE/secnote-2026-04.txt" }, { "category": "external", "summary": "Reference - cveprojectv5; github; nvd; osv; redhat", "url": "https://github.com/nats-io/nats-server/security/advisories/GHSA-52jh-2xxh-pwh6" }, { "category": "external", "summary": "Reference - cveprojectv5; github; nvd; osv; redhat", "url": "https://github.com/nats-io/nats-server/commit/a1488de6f2ba6e666aef0f9cce0016f7f167d6a8" }, { "category": "external", "summary": "Reference - github", "url": "https://github.com/advisories/GHSA-52jh-2xxh-pwh6" }, { "category": "external", "summary": "Reference - redhat", "url": "https://www.cve.org/CVERecord?id=CVE-2026-29785" }, { "category": "external", "summary": "Reference - github; redhat", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-29785" } ], "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:N/UI:N/S:U/C:N/I:N/A:H", "baseScore": 7.5, "baseSeverity": "HIGH" }, "products": [ "CSAFPID-1439328", "CSAFPID-2257522", "CSAFPID-2552008", "CSAFPID-2649998", "CSAFPID-2914734", "CSAFPID-5774317", "CSAFPID-5774318", "CSAFPID-5907270", "CSAFPID-5907271", "CSAFPID-5909682", "CSAFPID-5918235", "CSAFPID-5918237" ] } ], "title": "CVE-2026-29785" } ] }