{ "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-2026-30843", "tracking": { "current_release_date": "2026-03-30T03:13:29.075757Z", "generator": { "date": "2026-02-17T15:00:00Z", "engine": { "name": "V.E.L.M.A", "version": "1.7" } }, "id": "CVE-2026-30843", "initial_release_date": "2026-03-06T19:38:32.838357Z", "revision_history": [ { "date": "2026-03-06T19:38:32.838357Z", "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": "2026-03-06T19:38:42.682757Z", "number": "2", "summary": "NCSC Score created." }, { "date": "2026-03-06T20:27:06.039465Z", "number": "3", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (3).| CWES updated (1)." }, { "date": "2026-03-06T20:27:09.113825Z", "number": "4", "summary": "NCSC Score updated." }, { "date": "2026-03-07T14:46:34.172860Z", "number": "5", "summary": "Source created.| CVE status created. (valid)| EPSS created." }, { "date": "2026-03-09T11:27:13.542378Z", "number": "6", "summary": "NCSC Score updated." }, { "date": "2026-03-09T21:38:50.337874Z", "number": "7", "summary": "Unknown change." }, { "date": "2026-03-09T21:38:52.477031Z", "number": "8", "summary": "NCSC Score updated." }, { "date": "2026-03-11T16:26:19.825682Z", "number": "9", "summary": "CVSS created.| Products connected (2).| Product Identifiers created (2)." }, { "date": "2026-03-11T16:26:25.749592Z", "number": "10", "summary": "NCSC Score updated." }, { "date": "2026-03-20T09:33:53.096880Z", "number": "11", "summary": "Source connected.| CVE status created. (valid)| EPSS created." }, { "date": "2026-03-20T09:33:56.483679Z", "number": "12", "summary": "NCSC Score updated." }, { "date": "2026-03-30T03:13:22.802946Z", "number": "13", "summary": "NCSC Score updated." } ], "status": "interim", "version": "13" } }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/>=8.32|<8.34", "product": { "name": "vers:unknown/>=8.32|<8.34", "product_id": "CSAFPID-5767295" } } ], "category": "product_name", "name": "Wekan" } ], "category": "vendor", "name": "Wekan" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/8.32", "product": { "name": "vers:unknown/8.32", "product_id": "CSAFPID-5795215", "product_identification_helper": { "cpe": "cpe:2.3:a:wekan_project:wekan:8.32:*:*:*:*:*:*:*" } } }, { "category": "product_version_range", "name": "vers:unknown/8.33", "product": { "name": "vers:unknown/8.33", "product_id": "CSAFPID-5795216", "product_identification_helper": { "cpe": "cpe:2.3:a:wekan_project:wekan:8.33:*:*:*:*:*:*:*" } } } ], "category": "product_name", "name": "Wekan" } ], "category": "vendor", "name": "Wekan Project" } ] }, "vulnerabilities": [ { "cve": "CVE-2026-30843", "cwe": { "id": "CWE-639", "name": "Authorization Bypass Through User-Controlled Key" }, "notes": [ { "category": "description", "text": "Wekan is an open source kanban tool built with Meteor. Versions 8.32 and 8.33 have a critical Insecure Direct Object Reference (IDOR) issue which could allow unauthorized users to modify custom fields across boards through its custom fields update endpoints, potentially leading to unauthorized data manipulation. The PUT /api/boards/:boardId/custom-fields/:customFieldId endpoint in Wekan validates that the authenticated user has access to the specified boardId, but the subsequent database update uses only the custom field's _id as a filter without confirming the field actually belongs to that board. This means an attacker who owns any board can modify custom fields on any other board by supplying a foreign custom field ID, and the same flaw exists in the POST, PUT, and DELETE endpoints for dropdown items under custom fields. The required custom field IDs can be obtained by exporting a board (which only needs read access), since the exported JSON includes the IDs of all board components. The authorization check is performed against the wrong resource, allowing cross-board custom field manipulation. This issue has been fixed in version 8.34.", "title": "cveprojectv5 - https://www.cve.org/CVERecord?id=CVE-2026-30843" }, { "category": "description", "text": "Wekan is an open source kanban tool built with Meteor. Versions 8.32 and 8.33 have a critical Insecure Direct Object Reference (IDOR) issue which could allow unauthorized users to modify custom fields across boards through its custom fields update endpoints, potentially leading to unauthorized data manipulation. The PUT /api/boards/:boardId/custom-fields/:customFieldId endpoint in Wekan validates that the authenticated user has access to the specified boardId, but the subsequent database update uses only the custom field's _id as a filter without confirming the field actually belongs to that board. This means an attacker who owns any board can modify custom fields on any other board by supplying a foreign custom field ID, and the same flaw exists in the POST, PUT, and DELETE endpoints for dropdown items under custom fields. The required custom field IDs can be obtained by exporting a board (which only needs read access), since the exported JSON includes the IDs of all board components. The authorization check is performed against the wrong resource, allowing cross-board custom field manipulation. This issue has been fixed in version 8.34.", "title": "nvd - https://nvd.nist.gov/vuln/detail/CVE-2026-30843" }, { "category": "other", "text": "0.00028", "title": "EPSS" }, { "category": "other", "text": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N", "title": "CVSSV4" }, { "category": "other", "text": "9.3", "title": "CVSSV4 base score" }, { "category": "other", "text": "4.6", "title": "NCSC Score" }, { "category": "other", "text": "There is product data available from source Nvd", "title": "NCSC Score top increasing factors" }, { "category": "other", "text": "Is related to CWE-639 (Authorization Bypass Through User-Controlled Key), The value of the most recent EPSS score, Is related to (a version of) an uncommon product", "title": "NCSC Score top decreasing factors" } ], "product_status": { "known_affected": [ "CSAFPID-5767295", "CSAFPID-5795215", "CSAFPID-5795216" ] }, "references": [ { "category": "external", "summary": "Source - cveprojectv5", "url": "https://www.cve.org/CVERecord?id=CVE-2026-30843" }, { "category": "external", "summary": "Source raw - cveprojectv5", "url": "https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/30xxx/CVE-2026-30843.json" }, { "category": "external", "summary": "Source - nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-30843" }, { "category": "external", "summary": "Source raw - nvd", "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-30843" }, { "category": "external", "summary": "Source - first", "url": "https://api.first.org/data/v1/epss?cve=CVE-2026-30843" }, { "category": "external", "summary": "Source raw - first", "url": "https://api.first.org/data/v1/epss?limit=10000&offset=0" }, { "category": "external", "summary": "Source - first", "url": "https://api.first.org/data/v1/epss?limit=10000&offset=0" }, { "category": "external", "summary": "Reference - cveprojectv5; nvd", "url": "https://securitylab.github.com/advisories/GHSL-2026-044_Wekan/" }, { "category": "external", "summary": "Reference - cveprojectv5; nvd", "url": "https://github.com/wekan/wekan/commit/73eb98c57afd3d72377a1f7160a52450ab0eeb8b" }, { "category": "external", "summary": "Reference - cveprojectv5; nvd", "url": "https://github.com/wekan/wekan/releases/tag/v8.34" } ], "scores": [ { "cvss_v3": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N", "baseScore": 6.5, "baseSeverity": "MEDIUM" }, "products": [ "CSAFPID-5767295", "CSAFPID-5795215", "CSAFPID-5795216" ] } ], "title": "CVE-2026-30843" } ] }