{ "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-2026-30836", "tracking": { "current_release_date": "2026-03-25T18:14:52.365496Z", "generator": { "date": "2026-02-17T15:00:00Z", "engine": { "name": "V.E.L.M.A", "version": "1.7" } }, "id": "CVE-2026-30836", "initial_release_date": "2026-03-20T10:34:46.360127Z", "revision_history": [ { "date": "2026-03-20T10:34:46.360127Z", "number": "1", "summary": "CVE created.| Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (2).| CWES updated (1)." }, { "date": "2026-03-20T10:34:48.416659Z", "number": "2", "summary": "NCSC Score created." }, { "date": "2026-03-20T18:18:03.439869Z", "number": "3", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products created (1).| References created (3).| CWES updated (1)." }, { "date": "2026-03-20T18:18:07.183065Z", "number": "4", "summary": "NCSC Score updated." }, { "date": "2026-03-20T18:18:27.346015Z", "number": "5", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (3).| CWES updated (1)." }, { "date": "2026-03-20T18:18:29.668046Z", "number": "6", "summary": "NCSC Score updated." }, { "date": "2026-03-20T21:41:15.126928Z", "number": "7", "summary": "References created (3)." }, { "date": "2026-03-20T22:03:16.939538Z", "number": "8", "summary": "Source connected.| CVE status created. (valid)| EPSS created." }, { "date": "2026-03-21T00:28:24.392707Z", "number": "9", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (6).| CWES updated (1).| Vendor_assessment created." }, { "date": "2026-03-21T00:28:26.279878Z", "number": "10", "summary": "NCSC Score updated." }, { "date": "2026-03-25T14:39:24.765988Z", "number": "11", "summary": "Unknown change." }, { "date": "2026-03-25T18:13:21.435553Z", "number": "12", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products created (1).| References created (4).| CWES updated (1)." }, { "date": "2026-03-25T18:13:26.624963Z", "number": "13", "summary": "Source created.| CVE status created. (valid)| Description created for source.| References created (4)." } ], "status": "interim", "version": "13" } }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/<0.30.0", "product": { "name": "vers:unknown/<0.30.0", "product_id": "CSAFPID-5873968" } }, { "category": "product_version_range", "name": "vers:unknown/>=0|<0.30.0", "product": { "name": "vers:unknown/>=0|<0.30.0", "product_id": "CSAFPID-5907251" } } ], "category": "product_name", "name": "certificates" } ], "category": "vendor", "name": "smallstep" } ] }, "vulnerabilities": [ { "cve": "CVE-2026-30836", "cwe": { "id": "CWE-295", "name": "Improper Certificate Validation" }, "notes": [ { "category": "description", "text": "⚠️ **Limited Disclosure — Full Details Pending**\n\nA critical security vulnerability has been identified in Step CA. An updated version, v0.30.0, is available and all operators are strongly encouraged to upgrade immediately.\n\nFull details of this vulnerability will be published in this security advisory on March 30, 2026.\nIf you have urgent questions in the meantime, please contact [security@smallstep.com](mailto:security@smallstep.com).", "title": "github - https://api.github.com/advisories/GHSA-q4r8-xm5f-56gw" }, { "category": "description", "text": "Step CA is an online certificate authority for secure, automated certificate management for DevOps. Versions 0.30.0-rc6 and below do not safeguard against unauthenticated certificate issuance through the SCEP UpdateReq. This issue has been fixed in version 0.30.0.", "title": "cveprojectv5 - https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/30xxx/CVE-2026-30836.json" }, { "category": "description", "text": "Step CA is an online certificate authority for secure, automated certificate management for DevOps. Versions 0.30.0-rc6 and below do not safeguard against unauthenticated certificate issuance through the SCEP UpdateReq. This issue has been fixed in version 0.30.0.", "title": "nvd - https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-30836" }, { "category": "description", "text": "A flaw was found in Step CA, an online certificate authority. A remote attacker can exploit this vulnerability by sending an unauthenticated SCEP (Simple Certificate Enrollment Protocol) Update Request. This allows the attacker to issue unauthorized certificates, potentially leading to a compromise of the certificate management system and enabling further attacks such as impersonation or man-in-the-middle attacks.\nNo Red Hat products are impacted. The affected component (Step CA) is not used or provided by any products.", "title": "redhat - https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-30836.json" }, { "category": "description", "text": "⚠️ **Limited Disclosure — Full Details Pending**\n\nA critical security vulnerability has been identified in Step CA. An updated version, v0.30.0, is available and all operators are strongly encouraged to upgrade immediately.\n\nFull details of this vulnerability will be published in this security advisory on March 30, 2026.\nIf you have urgent questions in the meantime, please contact [security@smallstep.com](mailto:security@smallstep.com).", "title": "osv - https://www.googleapis.com/download/storage/v1/b/osv-vulnerabilities/o/Go%2FGHSA-q4r8-xm5f-56gw.json?alt=media" }, { "category": "description", "text": "step-ca has Unauthenticated Certificate Issuance via SCEP UpdateReq (MessageType=18) in github.com/smallstep/certificates", "title": "osv - https://www.googleapis.com/download/storage/v1/b/osv-vulnerabilities/o/Go%2FGO-2026-4775.json?alt=media" }, { "category": "other", "text": "7e-05", "title": "EPSS" }, { "category": "other", "text": "3.6", "title": "NCSC Score" }, { "category": "other", "text": "There is cwe data available from source Nvd", "title": "NCSC Score top decreasing factors" }, { "category": "details", "text": "Severity: 4\n", "title": "Vendor assessment" } ], "product_status": { "known_affected": [ "CSAFPID-5873968", "CSAFPID-5907251" ] }, "references": [ { "category": "external", "summary": "Source - github", "url": "https://api.github.com/advisories/GHSA-q4r8-xm5f-56gw" }, { "category": "external", "summary": "Source - cveprojectv5", "url": "https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/30xxx/CVE-2026-30836.json" }, { "category": "external", "summary": "Source - nvd", "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-30836" }, { "category": "external", "summary": "Source - first", "url": "https://api.first.org/data/v1/epss?limit=10000&offset=0" }, { "category": "external", "summary": "Source - redhat", "url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-30836.json" }, { "category": "external", "summary": "Source - osv", "url": "https://www.googleapis.com/download/storage/v1/b/osv-vulnerabilities/o/Go%2FGHSA-q4r8-xm5f-56gw.json?alt=media" }, { "category": "external", "summary": "Source - osv", "url": "https://www.googleapis.com/download/storage/v1/b/osv-vulnerabilities/o/Go%2FGO-2026-4775.json?alt=media" }, { "category": "external", "summary": "Reference - cveprojectv5; github; nvd; osv; redhat", "url": "https://github.com/smallstep/certificates/security/advisories/GHSA-q4r8-xm5f-56gw" }, { "category": "external", "summary": "Reference - github", "url": "https://github.com/advisories/GHSA-q4r8-xm5f-56gw" }, { "category": "external", "summary": "Reference - cveprojectv5; github; nvd; osv; redhat", "url": "https://github.com/smallstep/certificates/commit/e6da031d5125cfd99fe9a26f74bb41e4dacca4ef" }, { "category": "external", "summary": "Reference - cveprojectv5; github; nvd; osv; redhat", "url": "https://github.com/smallstep/certificates/releases/tag/v0.30.0-rc7" }, { "category": "external", "summary": "Reference - github; osv; redhat", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-30836" }, { "category": "external", "summary": "Reference - redhat", "url": "https://www.cve.org/CVERecord?id=CVE-2026-30836" }, { "category": "external", "summary": "Reference - redhat", "url": "https://github.com/smallstep/certificates/compare/v0.30.0-rc6...v0.30.0-rc7" } ], "scores": [ { "cvss_v3": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N", "baseScore": 10.0, "baseSeverity": "CRITICAL" }, "products": [ "CSAFPID-5873968", "CSAFPID-5907251" ] } ], "title": "CVE-2026-30836" } ] }