CVE-2026-50281

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-50281", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-06-04T16:26:05.985Z", "datePublished": "2026-07-02T16:02:14.029Z", "dateUpdated": "2026-07-02T19:44:23.581Z"}, "containers": {"cna": {"title": "Craft CMS: Mass assignment via id in newAttributes during bulk duplicate overwrites existing elements", "problemTypes": [{"descriptions": [{"cweId": "CWE-915", "lang": "en", "description": "CWE-915: Improperly Controlled Modification of Dynamically-Determined Object Attributes", "type": "CWE"}]}], "metrics": [{"cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "userInteraction": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 7.1, "baseSeverity": "HIGH", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N", "version": "4.0"}}], "references": [{"name": "https://github.com/craftcms/cms/security/advisories/GHSA-x5m4-g2cq-52pq", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/craftcms/cms/security/advisories/GHSA-x5m4-g2cq-52pq"}, {"name": "https://github.com/craftcms/cms/commit/8f6587c25050bbb6e080d59c71f6bb8932fc8600", "tags": ["x_refsource_MISC"], "url": "https://github.com/craftcms/cms/commit/8f6587c25050bbb6e080d59c71f6bb8932fc8600"}], "affected": [{"vendor": "craftcms", "product": "cms", "versions": [{"version": ">= 5.7.0, < 5.9.21", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-07-02T16:02:14.029Z"}, "descriptions": [{"lang": "en", "value": "Craft CMS is a content management system (CMS). Versions 5.7.0 and above, prior to 5.9.21 contain a mass-assignment flaw in the bulk-duplicate element action. An attacker who is only able to duplicate their own entires can submit an arbitrary id through the newAttributes request parameter. The duplication routine overrides its own id = null reset with that value and writes the attacker's attributes into the victim's existing entry row. ElementsController::beforeAction() pulls the request body into $this->_attributes and rejects requests that ship an id or canonicalId key at the top level, actionBulkDuplicate(), reads a separate newAttributes array and passes it straight through to the service layer. Elements::duplicateElement() clones the source element, sets id to null, and then hands the attacker's array to Craft::configure(), which overwrites the reset id with any numeric value inside $newAttributes. PHP Yii's saveElement() then performs an UPDATE against the row with that primary key instead of an INSERT. The attackers's title, slug, authorId, postDate, and UID land on the victim's entry. safeAttributes() on Entry includes id because the base element model exposes it, so the Collection::only() filter does not strip it. This issue has been fixed in version 5.9.21."}], "source": {"advisory": "GHSA-x5m4-g2cq-52pq", "discovery": "UNKNOWN"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-07-02T19:33:59.852902Z", "id": "CVE-2026-50281", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-07-02T19:44:23.581Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-50281", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-07-02T19:33:59.852902Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-07-02T19:44:18.395Z"}}], "cna": {"title": "Craft CMS: Mass assignment via id in newAttributes during bulk duplicate overwrites existing elements", "source": {"advisory": "GHSA-x5m4-g2cq-52pq", "discovery": "UNKNOWN"}, "metrics": [{"cvssV4_0": {"version": "4.0", "baseScore": 7.1, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "NONE"}}], "affected": [{"vendor": "craftcms", "product": "cms", "versions": [{"status": "affected", "version": ">= 5.7.0, < 5.9.21"}]}], "references": [{"url": "https://github.com/craftcms/cms/security/advisories/GHSA-x5m4-g2cq-52pq", "name": "https://github.com/craftcms/cms/security/advisories/GHSA-x5m4-g2cq-52pq", "tags": ["x_refsource_CONFIRM"]}, {"url": "https://github.com/craftcms/cms/commit/8f6587c25050bbb6e080d59c71f6bb8932fc8600", "name": "https://github.com/craftcms/cms/commit/8f6587c25050bbb6e080d59c71f6bb8932fc8600", "tags": ["x_refsource_MISC"]}], "descriptions": [{"lang": "en", "value": "Craft CMS is a content management system (CMS). Versions 5.7.0 and above, prior to 5.9.21 contain a mass-assignment flaw in the bulk-duplicate element action. An attacker who is only able to duplicate their own entires can submit an arbitrary id through the newAttributes request parameter. The duplication routine overrides its own id = null reset with that value and writes the attacker's attributes into the victim's existing entry row. ElementsController::beforeAction() pulls the request body into $this->_attributes and rejects requests that ship an id or canonicalId key at the top level, actionBulkDuplicate(), reads a separate newAttributes array and passes it straight through to the service layer. Elements::duplicateElement() clones the source element, sets id to null, and then hands the attacker's array to Craft::configure(), which overwrites the reset id with any numeric value inside $newAttributes. PHP Yii's saveElement() then performs an UPDATE against the row with that primary key instead of an INSERT. The attackers's title, slug, authorId, postDate, and UID land on the victim's entry. safeAttributes() on Entry includes id because the base element model exposes it, so the Collection::only() filter does not strip it. This issue has been fixed in version 5.9.21."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-915", "description": "CWE-915: Improperly Controlled Modification of Dynamically-Determined Object Attributes"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-07-02T16:02:14.029Z"}}}, "cveMetadata": {"cveId": "CVE-2026-50281", "state": "PUBLISHED", "dateUpdated": "2026-07-02T19:44:23.581Z", "dateReserved": "2026-06-04T16:26:05.985Z", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "datePublished": "2026-07-02T16:02:14.029Z", "assignerShortName": "GitHub_M"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"product": "cms", "vendor": "craftcms", "versions": [{"status": "affected", "version": ">= 5.7.0, < 5.9.21"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Craft CMS is a content management system (CMS). Versions 5.7.0 and above, prior to 5.9.21 contain a mass-assignment flaw in the bulk-duplicate element action. An attacker who is only able to duplicate their own entires can submit an arbitrary id through the newAttributes request parameter. The duplication routine overrides its own id = null reset with that value and writes the attacker's attributes into the victim's existing entry row. ElementsController::beforeAction() pulls the request body into $this->_attributes and rejects requests that ship an id or canonicalId key at the top level, actionBulkDuplicate(), reads a separate newAttributes array and passes it straight through to the service layer. Elements::duplicateElement() clones the source element, sets id to null, and then hands the attacker's array to Craft::configure(), which overwrites the reset id with any numeric value inside $newAttributes. PHP Yii's saveElement() then performs an UPDATE against the row with that primary key instead of an INSERT. The attackers's title, slug, authorId, postDate, and UID land on the victim's entry. safeAttributes() on Entry includes id because the base element model exposes it, so the Collection::only() filter does not strip it. This issue has been fixed in version 5.9.21."}, {"lang": "es", "value": "Craft CMS es un sistema de gesti\u00f3n de contenido (CMS). Las versiones 5.7.0 y superiores, anteriores a la 5.9.21, contienen una falla de asignaci\u00f3n masiva en la acci\u00f3n de elemento de duplicaci\u00f3n masiva. Un atacante que solo puede duplicar sus propias entradas puede enviar un ID arbitrario a trav\u00e9s del par\u00e1metro de solicitud newAttributes. La rutina de duplicaci\u00f3n anula su propio restablecimiento de id = null con ese valor y escribe los atributos del atacante en la fila de entrada existente de la v\u00edctima. ElementsController::beforeAction() extrae el cuerpo de la solicitud en $this -> _attributes y rechaza las solicitudes que env\u00edan una clave id o canonicalId en el nivel superior, actionBulkDuplicate(), lee un array newAttributes separado y lo pasa directamente a la capa de servicio. Elements::duplicateElement() clona el elemento de origen, establece id en null y luego entrega el array del atacante a Craft::configure(), que sobrescribe el id restablecido con cualquier valor num\u00e9rico dentro de $newAttributes. El saveElement() de PHP Yii luego realiza un UPDATE contra la fila con esa clave primaria en lugar de un INSERT. El t\u00edtulo, slug, authorId, postDate y UID del atacante terminan en la entrada de la v\u00edctima. safeAttributes() en Entry incluye id porque el modelo de elemento base lo expone, por lo que el filtro Collection::only() no lo elimina. Este problema ha sido solucionado en la versi\u00f3n 5.9.21."}], "id": "CVE-2026-50281", "lastModified": "2026-10-25T21:10:00.770", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 7.1, "baseSeverity": "HIGH", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "LOW", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "version": "4.0", "vulnAvailabilityImpact": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-50281", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-07-02T19:33:59.852902Z", "version": "2.0.3"}}]}, "published": "2026-07-02T17:17:00.000", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/craftcms/cms/commit/8f6587c25050bbb6e080d59c71f6bb8932fc8600"}, {"source": "security-advisories@github.com", "url": "https://github.com/craftcms/cms/security/advisories/GHSA-x5m4-g2cq-52pq"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-915"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[5.7.0,5.9.21)"}}], "enrichment": {"confidence": 83.0, "confidence_source": "matching", "scores": [{"score": 83.0, "source": "matching"}]}, "original": {"product": "cms", "source": "cna", "vendor": "craftcms"}, "product": "craftcms", "vendor": "craftcms"}], "created": "2026-07-03T03:30:04.768477+00:00", "updated": "2026-07-31T15:15:02.970331+00:00", "vendors": ["craftcms", "craftcms$PRODUCT$craftcms"]}