CVE-2026-68561

{"id": "CVE-2026-68561", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-68561", "role": "CISA Coordinator", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-08-25T13:57:05.363320Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.8, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 2.8}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "wekan", "product": "wekan", "versions": [{"status": "affected", "version": "< 9.89"}]}]}], "published": "2026-08-19T20:17:21.400", "references": [{"url": "https://github.com/wekan/wekan/commit/dc135f6e7d59f9f56065cd5df83b1f123ea120bb", "source": "security-advisories@github.com"}, {"url": "https://github.com/wekan/wekan/releases/tag/v9.89", "source": "security-advisories@github.com"}, {"url": "https://github.com/wekan/wekan/security/advisories/GHSA-xm8x-c8wg-jhmf", "source": "security-advisories@github.com"}, {"url": "https://github.com/wekan/wekan/security/advisories/GHSA-xm8x-c8wg-jhmf", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-269"}, {"lang": "en", "value": "CWE-863"}]}], "descriptions": [{"lang": "en", "value": "Wekan is open source kanban built with Meteor. Prior to 9.89, the second Boards.allow({ update }) rule in server/permissions/boards.js called canUpdateBoardSort in server/lib/utils.js, which authorized any board member whenever fieldNames included sort. Because Meteor combines allow rules with OR semantics and applies the complete modifier, a comment-only or read-only member could send one Boards.update with $set values for sort, members, permission, and title, make themselves the sole board administrator, expose a private board, and evict the legitimate owner; the last-admin deny rule inspected only $pull and did not block a wholesale $set of members. Version 9.89 requires sort to be the only modified field and rejects $set member arrays that remove the last active administrator. This issue is fixed in version 9.89."}, {"lang": "es", "value": "Wekan es un kanban de c\u00f3digo abierto construido con Meteor. Antes de la versi\u00f3n 9.89, la segunda regla Boards.allow({ update }) en server/permissions/boards.js llamaba a canUpdateBoardSort en server/lib/utils.js, lo que autorizaba a cualquier miembro del tablero siempre que fieldNames inclu\u00eda sort. Debido a que Meteor combina las reglas de permiso con sem\u00e1ntica OR y aplica el modificador completo, un miembro solo de comentarios o de solo lectura pod\u00eda enviar una actualizaci\u00f3n de Boards con valores $set para sort, members, permission y title, convertirse en el \u00fanico administrador del tablero, exponer un tablero privado y expulsar al propietario leg\u00edtimo; la regla de denegaci\u00f3n del \u00faltimo administrador inspeccionaba solo $pull y no bloqueaba un $set masivo de members. La versi\u00f3n 9.89 requiere que sort sea el \u00fanico campo modificado y rechaza los arrays de miembros $set que eliminan al \u00faltimo administrador activo. Este problema est\u00e1 solucionado en la versi\u00f3n 9.89."}], "lastModified": "2026-10-26T10:10:00.140", "sourceIdentifier": "security-advisories@github.com"}