CVE-2026-45334

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-45334", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-05-11T20:50:30.540Z", "datePublished": "2026-07-16T21:42:51.081Z", "dateUpdated": "2026-07-17T18:06:29.822Z"}, "containers": {"cna": {"title": "Kirby: Content locks disclose IDs and emails of inaccessible users from `users.access/list` permissions", "problemTypes": [{"descriptions": [{"cweId": "CWE-862", "lang": "en", "description": "CWE-862: Missing Authorization", "type": "CWE"}]}], "metrics": [{"cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "userInteraction": "NONE", "vulnConfidentialityImpact": "LOW", "vulnIntegrityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 5.3, "baseSeverity": "MEDIUM", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N", "version": "4.0"}}], "references": [{"name": "https://github.com/getkirby/kirby/security/advisories/GHSA-39vq-49qm-r2mc", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/getkirby/kirby/security/advisories/GHSA-39vq-49qm-r2mc"}, {"name": "https://github.com/getkirby/kirby/releases/tag/5.4.1", "tags": ["x_refsource_MISC"], "url": "https://github.com/getkirby/kirby/releases/tag/5.4.1"}], "affected": [{"vendor": "getkirby", "product": "kirby", "versions": [{"version": "< 4.9.1", "status": "affected"}, {"version": ">= 5.0.0, < 5.4.1", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-07-16T21:42:51.081Z"}, "descriptions": [{"lang": "en", "value": "Kirby is an open-source content management system. In versions prior to 4.9.1 and 5.4.1, the content-locking feature returned lock information without checking the requesting user's access permissions. Kirby's Panel includes a content-locking feature that records which user currently has a model open for editing. This lock prevents conflicting edits by multiple users and displays the locking user's identity in the Panel UI so other users know who to contact. Internally, the locking user's email address and identifier are included in every Panel view payload and in error responses returned when a user attempts to edit a model that is currently locked by another user. This allowed a low-privilege authenticated Panel user, whose role was configured with users.access: false or users.list: false, to learn the email address and identifier of any user who currently had a model open for editing in the Panel, including administrators and other higher-privilege users. Content locks are active for a configurable window (10 minutes by default). The email address can allow admin account enumeration, target phishing, and feed credential-stuffing attacks against the Kirby installation or other sites. The internal user ID can be cross-referenced with other endpoints once the requester has obtained a higher privilege through unrelated means. This issue has been fixed in versions 4.9.1 and 5.4.1."}], "source": {"advisory": "GHSA-39vq-49qm-r2mc", "discovery": "UNKNOWN"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-07-17T16:47:38.073073Z", "id": "CVE-2026-45334", "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": "2026-07-17T18:06:29.822Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-45334", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-07-17T16:47:38.073073Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-07-17T16:47:42.297Z"}}], "cna": {"title": "Kirby: Content locks disclose IDs and emails of inaccessible users from `users.access/list` permissions", "source": {"advisory": "GHSA-39vq-49qm-r2mc", "discovery": "UNKNOWN"}, "metrics": [{"cvssV4_0": {"version": "4.0", "baseScore": 5.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "LOW"}}], "affected": [{"vendor": "getkirby", "product": "kirby", "versions": [{"status": "affected", "version": "< 4.9.1"}, {"status": "affected", "version": ">= 5.0.0, < 5.4.1"}]}], "references": [{"url": "https://github.com/getkirby/kirby/security/advisories/GHSA-39vq-49qm-r2mc", "name": "https://github.com/getkirby/kirby/security/advisories/GHSA-39vq-49qm-r2mc", "tags": ["x_refsource_CONFIRM"]}, {"url": "https://github.com/getkirby/kirby/releases/tag/5.4.1", "name": "https://github.com/getkirby/kirby/releases/tag/5.4.1", "tags": ["x_refsource_MISC"]}], "descriptions": [{"lang": "en", "value": "Kirby is an open-source content management system. In versions prior to 4.9.1 and 5.4.1, the content-locking feature returned lock information without checking the requesting user's access permissions. Kirby's Panel includes a content-locking feature that records which user currently has a model open for editing. This lock prevents conflicting edits by multiple users and displays the locking user's identity in the Panel UI so other users know who to contact. Internally, the locking user's email address and identifier are included in every Panel view payload and in error responses returned when a user attempts to edit a model that is currently locked by another user. This allowed a low-privilege authenticated Panel user, whose role was configured with users.access: false or users.list: false, to learn the email address and identifier of any user who currently had a model open for editing in the Panel, including administrators and other higher-privilege users. Content locks are active for a configurable window (10 minutes by default). The email address can allow admin account enumeration, target phishing, and feed credential-stuffing attacks against the Kirby installation or other sites. The internal user ID can be cross-referenced with other endpoints once the requester has obtained a higher privilege through unrelated means. This issue has been fixed in versions 4.9.1 and 5.4.1."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-862", "description": "CWE-862: Missing Authorization"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-07-16T21:42:51.081Z"}}}, "cveMetadata": {"cveId": "CVE-2026-45334", "state": "PUBLISHED", "dateUpdated": "2026-07-17T18:06:29.822Z", "dateReserved": "2026-05-11T20:50:30.540Z", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "datePublished": "2026-07-16T21:42:51.081Z", "assignerShortName": "GitHub_M"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"product": "kirby", "vendor": "getkirby", "versions": [{"status": "affected", "version": "< 4.9.1"}, {"status": "affected", "version": ">= 5.0.0, < 5.4.1"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Kirby is an open-source content management system. In versions prior to 4.9.1 and 5.4.1, the content-locking feature returned lock information without checking the requesting user's access permissions. Kirby's Panel includes a content-locking feature that records which user currently has a model open for editing. This lock prevents conflicting edits by multiple users and displays the locking user's identity in the Panel UI so other users know who to contact. Internally, the locking user's email address and identifier are included in every Panel view payload and in error responses returned when a user attempts to edit a model that is currently locked by another user. This allowed a low-privilege authenticated Panel user, whose role was configured with users.access: false or users.list: false, to learn the email address and identifier of any user who currently had a model open for editing in the Panel, including administrators and other higher-privilege users. Content locks are active for a configurable window (10 minutes by default). The email address can allow admin account enumeration, target phishing, and feed credential-stuffing attacks against the Kirby installation or other sites. The internal user ID can be cross-referenced with other endpoints once the requester has obtained a higher privilege through unrelated means. This issue has been fixed in versions 4.9.1 and 5.4.1."}, {"lang": "es", "value": "Kirby es un sistema de gesti\u00f3n de contenido de c\u00f3digo abierto. En versiones anteriores a la 4.9.1 y 5.4.1, la funci\u00f3n de bloqueo de contenido devolv\u00eda informaci\u00f3n de bloqueo sin verificar los permisos de acceso del usuario solicitante. El Panel de Kirby incluye una funci\u00f3n de bloqueo de contenido que registra qu\u00e9 usuario tiene actualmente un modelo abierto para edici\u00f3n. Este bloqueo evita ediciones conflictivas por parte de m\u00faltiples usuarios y muestra la identidad del usuario que realiza el bloqueo en la interfaz de usuario del Panel para que otros usuarios sepan a qui\u00e9n contactar. Internamente, la direcci\u00f3n de correo electr\u00f3nico y el identificador del usuario que realiza el bloqueo se incluyen en cada carga \u00fatil de la vista del Panel y en las respuestas de error devueltas cuando un usuario intenta editar un modelo que est\u00e1 actualmente bloqueado por otro usuario. Esto permit\u00eda a un usuario autenticado del Panel con bajos privilegios, cuyo rol estaba configurado con users.access: false o users.list: false, conocer la direcci\u00f3n de correo electr\u00f3nico y el identificador de cualquier usuario que tuviera actualmente un modelo abierto para edici\u00f3n en el Panel, incluyendo administradores y otros usuarios con mayores privilegios. Los bloqueos de contenido est\u00e1n activos durante una ventana configurable (10 minutos por defecto). La direcci\u00f3n de correo electr\u00f3nico puede permitir la enumeraci\u00f3n de cuentas de administrador, el phishing dirigido y alimentar ataques de relleno de credenciales contra la instalaci\u00f3n de Kirby u otros sitios. El ID de usuario interno puede ser cotejado con otros puntos finales una vez que el solicitante haya obtenido un privilegio superior a trav\u00e9s de medios no relacionados. Este problema ha sido solucionado en las versiones 4.9.1 y 5.4.1."}], "id": "CVE-2026-45334", "lastModified": "2026-10-24T20:10:00.137", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 5.3, "baseSeverity": "MEDIUM", "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:L/VI:N/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": "LOW", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-45334", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-07-17T16:47:38.073073Z", "version": "2.0.3"}}]}, "published": "2026-07-16T22:17:02.550", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/getkirby/kirby/releases/tag/5.4.1"}, {"source": "security-advisories@github.com", "url": "https://github.com/getkirby/kirby/security/advisories/GHSA-39vq-49qm-r2mc"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-862"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,4.9.1)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[5.0.0,5.4.1)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "kirby", "source": "cna", "vendor": "getkirby"}, "product": "kirby", "vendor": "getkirby"}], "created": "2026-07-16T23:30:07.187488+00:00", "updated": "2026-08-01T08:45:02.855730+00:00", "vendors": ["getkirby", "getkirby$PRODUCT$kirby"]}