{"id":"CVE-2026-45267","aliases":["EUVD-2026-33679","GHSA-r4gh-f8x6-m55f"],"status":"published","title":"Nextcloud: Missing permission check for from submissions","description":"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.","severity":{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00291,"percentile":0.21814,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-200","CWE-862"],"published":"2026-06-01T16:40:18Z","modified":"2026-10-28T02:30:36Z","products":[{"vendor":"kiteworks","product":"security-advisories"},{"vendor":"nextcloud","product":"security-advisories"}],"references":[{"url":"https://github.com/nextcloud/security-advisories/security/advisories/GHSA-r4gh-f8x6-m55f","tags":["x_refsource_CONFIRM","advisory"]},{"url":"https://github.com/nextcloud/forms/pull/3269","tags":["x_refsource_MISC","fix"]},{"url":"https://hackerone.com/reports/3628817","tags":["x_refsource_MISC","web"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45267.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-45267","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-45267","title":"Nextcloud: Missing permission check for from submissions","description":"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.","status":"published","published":"2026-06-01T16:40:18.592Z","modified":"2026-06-01T18:12:23.278Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-200","CWE-862"],"updated_at":"2026-11-02T13:46:32.755125Z"}],"euvd":[{"id":"EUVD-2026-33679","description":"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.","status":"published","published":"2026-06-01T16:40:18Z","modified":"2026-06-01T18:12:23Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T18:20:57.828765Z"}],"nvd":[{"id":"CVE-2026-45267","description":"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.","status":"published","published":"2026-06-01T17:17:09.963Z","modified":"2026-07-22T07:10:00.107Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-200","CWE-862"],"updated_at":"2026-11-02T14:12:21.635958Z"}],"osv":[{"id":"CVE-2026-45267","title":"Nextcloud: Missing permission check for from submissions","description":"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.","status":"published","published":"2026-06-01T16:40:18.592Z","modified":"2026-10-28T02:30:36.038770111Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-200","CWE-862"],"updated_at":"2026-11-02T15:45:05.172514Z"}]}}