{"schema_version":1,"title":"Nextcloud User OIDC vulnerabilities","summary":"Junglewise Threat Intelligence has tracked 3 vulnerabilities in Nextcloud User OIDC: 0 in the last 7 days and 0 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-45284, was published on 1 June 2026.","url":"https://junglewise.ai/threats/technologies/user-oidc","json_url":"https://junglewise.ai/threats/technologies/user-oidc.json","publisher":"Junglewise Threat Intelligence","license":"CC-BY-4.0","license_url":"https://creativecommons.org/licenses/by/4.0/","attribution":"Junglewise Threat Intelligence, https://junglewise.ai/threats/technologies/user-oidc","sources":"NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories","kind":"technology","counts":{"high":1,"all_time":3,"critical":0,"exploited":0,"last_7_days":0,"last_30_days":0,"last_90_days":0,"last_365_days":3},"latest":[{"cve":"CVE-2026-45284","cvss":4.6,"slug":"cve-2026-45284-nextcloud-user-oidc-improper-access-control-for-deleted-ldap","title":"Nextcloud User OIDC improper access control for deleted LDAP users","severity":"medium","exploited":false,"published_at":"2026-06-01T19:16:50.67+00:00","url":"https://junglewise.ai/threats/cve-2026-45284-nextcloud-user-oidc-improper-access-control-for-deleted-ldap"},{"cve":"CVE-2026-45278","cvss":3.3,"slug":"cve-2026-45278-nextcloud-user-oidc-open-redirect-in-login-flow","title":"Nextcloud User OIDC open redirect in login flow","severity":"low","exploited":false,"published_at":"2026-06-01T19:16:49.823+00:00","url":"https://junglewise.ai/threats/cve-2026-45278-nextcloud-user-oidc-open-redirect-in-login-flow"},{"cve":"CVE-2026-45156","cvss":8.1,"slug":"cve-2026-45156-nextcloud-user-oidc-authentication-bypass-via-missing-signature","title":"Nextcloud User OIDC authentication bypass via missing signature verification","severity":"high","exploited":false,"published_at":"2026-06-01T17:17:09.283+00:00","url":"https://junglewise.ai/threats/cve-2026-45156-nextcloud-user-oidc-authentication-bypass-via-missing-signature"}],"weekly":[{"week":"2026-06-29","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-06","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-13","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-20","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-27","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-03","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-10","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-17","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-24","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-31","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-07","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-14","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-21","critical":0,"exploited":0,"vulnerabilities":0}],"related":[{"name":"Nextcloud Enterprise Server","slug":"nextcloud-enterprise-server","vulnerabilities":7,"url":"https://junglewise.ai/threats/technologies/nextcloud-enterprise-server"},{"name":"Nextcloud Server","slug":"nextcloud-server","vulnerabilities":7,"url":"https://junglewise.ai/threats/technologies/nextcloud-server"},{"name":"Nextcloud Forms","slug":"forms","vulnerabilities":4,"url":"https://junglewise.ai/threats/technologies/forms"},{"name":"Nextcloud Approval","slug":"approval","vulnerabilities":3,"url":"https://junglewise.ai/threats/technologies/approval"},{"name":"Nextcloud Tables","slug":"tables","vulnerabilities":3,"url":"https://junglewise.ai/threats/technologies/tables"}],"technology":{"hub":true,"name":"Nextcloud User OIDC","slug":"user-oidc","vendor":{"name":"Nextcloud","slug":"nextcloud","url":"https://junglewise.ai/threats/vendors/nextcloud"},"aliases":[],"category":"application","homepage":"https://apps.nextcloud.com/apps/user_oidc","repo_url":"https://github.com/nextcloud/user_oidc","description":"An application for Nextcloud that allows users to authenticate via an OpenID Connect provider.","url":"https://junglewise.ai/threats/technologies/user-oidc"},"most_severe":[{"cve":"CVE-2026-45156","cvss":8.1,"slug":"cve-2026-45156-nextcloud-user-oidc-authentication-bypass-via-missing-signature","title":"Nextcloud User OIDC authentication bypass via missing signature verification","severity":"high","exploited":false,"published_at":"2026-06-01T17:17:09.283+00:00","url":"https://junglewise.ai/threats/cve-2026-45156-nextcloud-user-oidc-authentication-bypass-via-missing-signature"},{"cve":"CVE-2026-45284","cvss":4.6,"slug":"cve-2026-45284-nextcloud-user-oidc-improper-access-control-for-deleted-ldap","title":"Nextcloud User OIDC improper access control for deleted LDAP users","severity":"medium","exploited":false,"published_at":"2026-06-01T19:16:50.67+00:00","url":"https://junglewise.ai/threats/cve-2026-45284-nextcloud-user-oidc-improper-access-control-for-deleted-ldap"},{"cve":"CVE-2026-45278","cvss":3.3,"slug":"cve-2026-45278-nextcloud-user-oidc-open-redirect-in-login-flow","title":"Nextcloud User OIDC open redirect in login flow","severity":"low","exploited":false,"published_at":"2026-06-01T19:16:49.823+00:00","url":"https://junglewise.ai/threats/cve-2026-45278-nextcloud-user-oidc-open-redirect-in-login-flow"}],"generated_at":"2026-09-26T09:11:00.170868+00:00"}