CVE-2026-1963

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This affects an unknown function of the file models/attachments.js of the component Attachment Storage. The manipulation results in improper access controls. The attack may be launched remotely. Upgrading to version 8.21 mitigates this issue. The patch is identified as c413a7e860bc4d93fe2adcf82516228570bf382d. Upgrading the affected component is advised."}, {"lang": "es", "value": "Se encontr\u00f3 una vulnerabilidad en WeKan hasta la versi\u00f3n 8.20. Esto afecta una funci\u00f3n desconocida del archivo models/attachments.js del componente Almacenamiento de Adjuntos. La manipulaci\u00f3n resulta en controles de acceso inadecuados. El ataque puede lanzarse remotamente. La actualizaci\u00f3n a la versi\u00f3n 8.21 mitiga este problema. El parche se identifica como c413a7e860bc4d93fe2adcf82516228570bf382d. Se aconseja actualizar el componente afectado."}], "id": "CVE-2026-1963", "lastModified": "2026-06-17T10:16:47.347", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "SINGLE", "availabilityImpact": "PARTIAL", "baseScore": 6.5, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:P", "version": "2.0"}, "exploitabilityScore": 8.0, "impactScore": 6.4, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "cna@vuldb.com", "type": "Secondary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 6.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 3.4, "source": "cna@vuldb.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}], "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:L/VA:L/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": "LOW", "vulnConfidentialityImpact": "LOW", "vulnIntegrityImpact": "LOW", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "cna@vuldb.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-1963", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-02-12T15:11:36.426743Z", "version": "2.0.3"}}]}, "published": "2026-02-05T21:15:53.180", "references": [{"source": "cna@vuldb.com", "tags": ["Product"], "url": "https://github.com/wekan/wekan/"}, {"source": "cna@vuldb.com", "tags": ["Patch"], "url": "https://github.com/wekan/wekan/commit/c413a7e860bc4d93fe2adcf82516228570bf382d"}, {"source": "cna@vuldb.com", "tags": ["Product", "Release Notes"], "url": "https://github.com/wekan/wekan/releases/tag/v8.21"}, {"source": "cna@vuldb.com", "tags": ["Permissions Required", "VDB Entry"], "url": "https://vuldb.com/?ctiid.344485"}, {"source": "cna@vuldb.com", "tags": ["Third Party Advisory", "VDB Entry"], "url": "https://vuldb.com/?id.344485"}, {"source": "cna@vuldb.com", "tags": ["Third Party Advisory", "VDB Entry"], "url": "https://vuldb.com/?submit.742678"}], "sourceIdentifier": "cna@vuldb.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-266"}, {"lang": "en", "value": "CWE-284"}], "source": "cna@vuldb.com", "type": "Secondary"}]}

{}

{"analysis": {"en": {"generated_at": "2026-04-17T22:59:06.215506+00:00", "value": {"mitigation_remediation": ["Upgrade WeKan to version 8.21 or later to receive the fixed attachment handling logic.", "If an upgrade is not immediately possible, apply the patch commit c413a7e860bc4d93fe2adcf82516228570bf382d to the affected file.", "Implement network controls to restrict external access to the attachments endpoint, such as firewall rules or placing the application behind an authentication gateway."], "summary": {"action": "Patch", "impact": "Improper access controls"}, "threat_synthesis": {"affected_systems": "Versions of WeKan up to and including 8.20 are affected. The vendor addressed the flaw in release 8.21, with the patch identified by commit c413a7e860bc4d93fe2adcf82516228570bf382d. All installations running 8.20 or earlier are vulnerable and the issue is confined to the Attachment Storage component.", "description_and_impact": "A flaw in the Attachment Storage component of WeKan allows an attacker to bypass authorization checks for handling attachments. The vulnerability exists in the models/attachments.js module and can be triggered by manipulating requests, enabling unauthorized reading, uploading or deletion of attachments. This weakness aligns with CWE-266 and CWE-284 and threatens the confidentiality and integrity of stored attachments. Because the description indicates the attack may be launched remotely, an attacker only needs to send crafted traffic to a vulnerable WeKan instance.", "risk_and_exploitability": "The CVSS base score of 5.3 classifies the issue as medium severity, while an EPSS score below 1% indicates a low likelihood of exploitation. The vulnerability is not listed in CISA\u2019s KEV catalog. The likely attack vector is remote, involving a specially crafted request to the attachments endpoint, which could allow an attacker to access or modify confidential attachments."}}}}, "created": "2026-02-06T12:05:04.873651+00:00", "updated": "2026-04-17T23:00:12.657132+00:00", "vendors": ["wekan_project", "wekan_project$PRODUCT$wekan"]}