{"id":"CVE-2026-45267","summary":"Nextcloud: Missing permission check for from submissions","details":"Nextcloud is an open source content collaboration platform. Prior to version 5.2.6, a missing permissions check allowed users to request reading form submissions of other users. This issue has been patched in version 5.2.6.","aliases":["GHSA-r4gh-f8x6-m55f"],"modified":"2026-07-24T03:56:43.255140074Z","published":"2026-06-01T16:40:18.592Z","database_specific":{"cwe_ids":["CWE-200","CWE-862"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45267.json","cna_assigner":"GitHub_M"},"references":[{"type":"WEB","url":"https://hackerone.com/reports/3628817"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45267.json"},{"type":"ADVISORY","url":"https://github.com/nextcloud/security-advisories/security/advisories/GHSA-r4gh-f8x6-m55f"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-45267"},{"type":"FIX","url":"https://github.com/nextcloud/forms/pull/3269"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/nextcloud/forms","events":[{"introduced":"0"},{"fixed":"3e6b73535bb670e0b46c47c4333c8071f6009657"}],"database_specific":{"source":"AFFECTED_FIELD","extracted_events":[{"introduced":"0"},{"fixed":"5.2.6"}]}}],"versions":["v5.2.5","v5.2.4","v5.2.3","v5.2.2","v5.2.1","v5.2.0","v5.2.0-beta.2","v5.2.0-beta.1","v5.2.0-beta.0","v5.1.0","v5.0.4","v5.0.3","v5.0.2","v5.0.1","v5.0.0","v5.0.0-alpha.3","v5.0.0-alpha.2","v5.0.0-alpha.1","v5.0.0-alpha.0","v4.3.0","v4.3.0-alpha7","v4.3.0-alpha6","v4.3.0-alpha5","v4.3.0-alpha4","v4.3.0-alpha3","v4.2.3","v4.2.2","v4.2.1","v4.2.0","v4.2.0-alpha.1","v4.1.1","v4.1.0","v4.0.0","v4.0.0-alpha.2","v4.0.0-alpha.1","v3.4.0","v3.3.1","v3.3.0","v3.2.0","v3.1.0","v3.0.4","v3.0.3","v3.0.2","v3.0.1","v3.0.0","v3.0.0-beta.2","v3.0.0-beta.1","v2.5.0","v2.4.0","v2.3.0","v2.3.0-alpha.0","v2.2.4","v2.2.3","v2.2.2","v2.2.1","v2.2.0","v2.2.0-beta.1","v2.1.0","v2.0.4","v2.0.3","v2.0.2","v2.0.0","v2.0.0-rc.1","v2.0.0-beta.4","v2.0.0-beta.3","v2.0.0-beta2","v2.0.0-beta1","v1.1.1","v1.1.0","v.1.0.4","v1.0.3"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-45267.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"}]}